CH Core (R4)
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This page is part of the CH Core (R4) (v5.0.0-ballot: STU 5 Ballot 1) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Resource Profile: CHCoreCompositionEPR - Detailed Descriptions

Active as of 2024-05-16

Definitions for the ch-core-composition-epr resource profile.

Guidance on how to interpret the contents of this table can be found here

0. Composition
ShortCH Core Composition EPR
2. Composition.language
Control1..?
4. Composition.extension
SlicingThis element introduces a set of slices on Composition.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 6. Composition.extension:informationRecipient
    Slice NameinformationRecipient
    Control0..*
    TypeExtension(EPR Information Recipient) (Extension Type: Reference)
    8. Composition.extension:dataEnterer
    Slice NamedataEnterer
    Control0..1
    TypeExtension(EPR Data Enterer) (Complex Extension)
    10. Composition.identifier
    NoteThis is a business identifier, not a resource identifier (see discussion)
    Control1..?
    12. Composition.identifier.system
    Control1..?
    Fixed Valueurn:ietf:rfc:3986
    14. Composition.identifier.value
    Control1..?
    16. Composition.type
    ShortKind of composition
    BindingUnless not suitable, these codes SHALL be taken from DocumentEntry.typeCode
    (extensible to http://fhir.ch/ig/ch-term/ValueSet/DocumentEntry.typeCode)
    18. Composition.subject
    Control1..?
    TypeReference(CH Core Patient EPR)
    20. Composition.author
    TypeReference(CH Core Practitioner EPR, CH Core PractitionerRole EPR, Device, CH Core Patient EPR, RelatedPerson, CH Core Organization EPR)
    22. Composition.author.extension:time
    Slice Nametime
    ShortTimestamp of the authorship/data input
    Control0..1
    TypeExtension(EPR Time) (Extension Type: dateTime)
    24. Composition.confidentiality
    Control1..?
    26. Composition.confidentiality.extension
    Control1..?
    SlicingThis element introduces a set of slices on Composition.confidentiality.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ url
    • 28. Composition.confidentiality.extension:confidentialityCode
      Slice NameconfidentialityCode
      Control1..1
      TypeExtension(EPR Confidentiality Code) (Extension Type: CodeableConcept)
      30. Composition.attester
      SlicingThis element introduces a set of slices on Composition.attester. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ mode
      • 32. Composition.attester:legalAuthenticator
        Slice NamelegalAuthenticator
        Shortlegal authenticator
        Control0..1
        34. Composition.attester:legalAuthenticator.mode
        Fixed Valuelegal
        36. Composition.attester:legalAuthenticator.party
        Control1..?
        TypeReference(CH Core Patient EPR, RelatedPerson, CH Core Practitioner EPR, CH Core PractitionerRole EPR)
        38. Composition.custodian
        TypeReference(CH Core Organization EPR)
        40. Composition.relatesTo
        42. Composition.relatesTo.target[x]
        TypeChoice of: Identifier, Reference(CH Core Composition EPR)
        [x] NoteSee Choice of Data Types for further information about how to use [x]
        44. Composition.section
        SlicingThis element introduces a set of slices on Composition.section. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • pattern @ code
        • 46. Composition.section.author
          TypeReference(CH Core Practitioner EPR, CH Core PractitionerRole EPR, Device, CH Core Patient EPR, RelatedPerson, CH Core Organization EPR)
          48. Composition.section:originalRepresentation
          Slice NameoriginalRepresentation
          ShortContains the original representation as a PDF of the current document.
          Control0..1
          50. Composition.section:originalRepresentation.title
          ShortOriginal representation
          Control1..?
          52. Composition.section:originalRepresentation.code
          Control1..?
          Pattern Value{
            "coding" : [{
              "system" : "http://loinc.org",
              "code" : "55108-5"
            }]
          }
          54. Composition.section:originalRepresentation.text
          ShortRepresentation of the original view
          Control1..?
          56. Composition.section:originalRepresentation.entry
          ShortAccording to the EPR ordonnance the PDF has to be in PDF/A-1 or PDF/A-2 format.
          Control1..1
          TypeReference(Binary)
          58. Composition.section:originalRepresentation.entry.extension:narrativeLink
          Slice NamenarrativeLink
          ShortnarrativeLink to img src attribute
          Control0..1
          TypeExtension(Narrative Link) (Extension Type: url)
          60. Composition.section:originalRepresentation.section
          Control0..0

          Guidance on how to interpret the contents of this table can be found here

          0. Composition
          Definition

          A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. A Composition defines the structure and narrative content necessary for a document. However, a Composition alone does not constitute a document. Rather, the Composition must be the first entry in a Bundle where Bundle.type=document, and any other resources referenced from Composition must be included as subsequent entries in the Bundle (for example Patient, Practitioner, Encounter, etc.).

          ShortCH Core Composition EPRA set of resources composed into a single coherent clinical statement with clinical attestation
          Comments

          While the focus of this specification is on patient-specific clinical statements, this resource can also apply to other healthcare-related statements such as study protocol designs, healthcare invoices and other activities that are not necessarily patient-specific or clinical.

          Control0..*
          Is Modifierfalse
          Summaryfalse
          Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
          dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
          dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
          dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
          dom-6: A resource should have narrative for robust management (text.`div`.exists())
          2. Composition.implicitRules
          Definition

          A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

          ShortA set of rules under which this content was created
          Comments

          Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

          Control0..1
          Typeuri
          Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          4. Composition.language
          Definition

          The base language in which the resource is written.

          ShortLanguage of the resource content
          Comments

          Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

          Control10..1
          BindingThe codes SHOULD be taken from CommonLanguageshttp://hl7.org/fhir/ValueSet/languages
          (preferred to http://hl7.org/fhir/ValueSet/languages)

          A human language.

          Additional BindingsPurpose
          AllLanguagesMax Binding
          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          6. Composition.extension
          Definition

          An Extension


          May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

          ShortExtensionAdditional content defined by implementations
          Comments

          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

          Control0..*
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          Alternate Namesextensions, user content
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
          SlicingThis element introduces a set of slices on Composition.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 8. Composition.extension:informationRecipient
            Slice NameinformationRecipient
            Definition

            Extension to define the information about the recipient

            ShortExtension
            Control0..*
            This element is affected by the following invariants: ele-1
            TypeExtension(EPR Information Recipient) (Extension Type: Reference)
            Is Modifierfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            10. Composition.extension:dataEnterer
            Slice NamedataEnterer
            Definition

            Extension to define the information about the person and organization that entered data and the time of the data input

            ShortExtension
            Control0..1
            This element is affected by the following invariants: ele-1
            TypeExtension(EPR Data Enterer) (Complex Extension)
            Is Modifierfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            12. Composition.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
            Summaryfalse
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            14. Composition.identifier
            Definition

            A version-independent identifier for the Composition. This identifier stays constant as the composition is changed over time.

            ShortVersion-independent identifier for the Composition
            Comments

            Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.

            NoteThis is a business identifier, not a resource identifier (see discussion)
            Control10..1
            TypeIdentifier
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            16. Composition.identifier.use
            Definition

            The purpose of this identifier.

            Shortusual | official | temp | secondary | old (If known)
            Comments

            Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

            Control0..1
            BindingThe codes SHALL be taken from IdentifierUsehttp://hl7.org/fhir/ValueSet/identifier-use|4.0.1
            (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

            Identifies the purpose for this identifier, if known .

            Typecode
            Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            18. Composition.identifier.system
            Definition

            Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

            ShortThe namespace for the identifier value
            Comments

            Identifier.system is always case sensitive.

            Control10..1
            Typeuri
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

            Fixed Valueurn:ietf:rfc:3986
            Example<br/><b>General</b>:http://www.acme.com/identifiers/patient
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            20. Composition.identifier.value
            Definition

            The portion of the identifier typically relevant to the user and which is unique within the context of the system.

            ShortThe value that is unique
            Comments

            If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

            Control10..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Example<br/><b>General</b>:123456
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            22. Composition.status
            Definition

            The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.

            Shortpreliminary | final | amended | entered-in-error
            Comments

            If a composition is marked as withdrawn, the compositions/documents in the series, or data from the composition or document series, should never be displayed to a user without being clearly marked as untrustworthy. The flag "entered-in-error" is why this element is labeled as a modifier of other elements.

            Some reporting work flows require that the original narrative of a final document never be altered; instead, only new narrative can be added. The composition resource has no explicit status for explicitly noting whether this business rule is in effect. This would be handled by an extension if required.

            Control1..1
            BindingThe codes SHALL be taken from CompositionStatushttp://hl7.org/fhir/ValueSet/composition-status|4.0.1
            (required to http://hl7.org/fhir/ValueSet/composition-status|4.0.1)

            The workflow/clinical status of the composition.

            Typecode
            Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Need to be able to mark interim, amended, or withdrawn compositions or documents.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            24. Composition.type
            Definition

            Specifies the particular kind of composition (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the composition.

            ShortKind of compositionKind of composition (LOINC if possible)
            Comments

            For Composition type, LOINC is ubiquitous and strongly endorsed by HL7. Most implementation guides will require a specific LOINC code, or use LOINC as an extensible binding.

            Control1..1
            BindingUnless not suitable, these codes SHALL be taken from The codes SHOULD be taken from DocumentEntry.typeCodehttp://hl7.org/fhir/ValueSet/doc-typecodes
            (extensible to http://fhir.ch/ig/ch-term/ValueSet/DocumentEntry.typeCode)
            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Requirements

            Key metadata element describing the composition, used in searching/filtering.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            26. Composition.subject
            Definition

            Who or what the composition is about. The composition can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of livestock, or a set of patients that share a common exposure).

            ShortWho and/or what the composition is about
            Comments

            For clinical documents, this is usually the patient.

            Control10..1
            TypeReference(CH Core Patient EPR, Resource)
            Is Modifierfalse
            Summarytrue
            Requirements

            Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            28. Composition.subject.reference
            Definition

            A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

            ShortLiteral reference, Relative, internal or absolute URL
            Comments

            Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

            Control10..1
            This element is affected by the following invariants: ref-1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            30. Composition.date
            Definition

            The composition editing time, when the composition was last logically changed by the author.

            ShortComposition editing time
            Comments

            The Last Modified Date on the composition may be after the date of the document was attested without being changed.

            Control1..1
            TypedateTime
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring. When packaged in a document, Bundle.timestamp is the date of packaging.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            32. Composition.author
            Definition

            Identifies who is responsible for the information in the composition, not necessarily who typed it in.

            ShortWho and/or what authored the composition
            Control1..*
            TypeReference(CH Core Practitioner EPR, CH Core PractitionerRole EPR, Device, CH Core Patient EPR, RelatedPerson, CH Core Organization EPR, Practitioner, PractitionerRole, Patient, Organization)
            Is Modifierfalse
            Summarytrue
            Requirements

            Identifies who is responsible for the content.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            34. Composition.author.extension:time
            Slice Nametime
            Definition

            Extension to define the timestamp of the authorship/data input

            ShortTimestamp of the authorship/data input
            Control0..1
            TypeExtension(EPR Time) (Extension Type: dateTime)
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            36. Composition.author.reference
            Definition

            A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

            ShortLiteral reference, Relative, internal or absolute URL
            Comments

            Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

            Control10..1
            This element is affected by the following invariants: ref-1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            38. Composition.title
            Definition

            Official human-readable label for the composition.

            ShortHuman Readable name/title
            Comments

            For many compositions, the title is the same as the text or a display name of Composition.type (e.g. a "consultation" or "progress note"). Note that CDA does not make title mandatory, but there are no known cases where it is useful for title to be omitted, so it is mandatory here. Feedback on this requirement is welcome during the trial use period.

            Control1..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            40. Composition.confidentiality
            Definition

            The code specifying the level of confidentiality of the Composition.

            ShortAs defined by affinity domain
            Comments

            The exact use of this element, and enforcement and issues related to highly sensitive documents are out of scope for the base specification, and delegated to implementation profiles (see security section). This element is labeled as a modifier because highly confidential documents must not be treated as if they are not.

            Control10..1
            BindingThe codes SHALL be taken from v3.ConfidentialityClassification (2014-03-26)http://terminology.hl7.org/ValueSet/v3-ConfidentialityClassification|2014-03-26
            (required to http://terminology.hl7.org/ValueSet/v3-ConfidentialityClassification|2014-03-26)

            Codes specifying the level of confidentiality of the composition.

            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            42. Composition.confidentiality.extension
            Definition

            An Extension


            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortExtensionAdditional content defined by implementations
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control10..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            SlicingThis element introduces a set of slices on Composition.confidentiality.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 44. Composition.confidentiality.extension:confidentialityCode
              Slice NameconfidentialityCode
              Definition

              Extension to define the confidentiality code of the document

              ShortExtension
              Control1..1
              This element is affected by the following invariants: ele-1
              TypeExtension(EPR Confidentiality Code) (Extension Type: CodeableConcept)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              46. Composition.attester
              Definition

              A participant who has attested to the accuracy of the composition/document.

              ShortAttests to accuracy of composition
              Comments

              Only list each attester once.

              Control0..*
              TypeBackboneElement
              Is Modifierfalse
              Summaryfalse
              Requirements

              Identifies responsibility for the accuracy of the composition content.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on Composition.attester. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ mode
              • 48. Composition.attester.modifierExtension
                Definition

                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                ShortExtensions that cannot be ignored even if unrecognized
                Comments

                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                Summarytrue
                Requirements

                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                Alternate Namesextensions, user content, modifiers
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                50. Composition.attester.mode
                Definition

                The type of attestation the authenticator offers.

                Shortpersonal | professional | legal | official
                Control1..1
                BindingThe codes SHALL be taken from CompositionAttestationModehttp://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1
                (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                The way in which a person authenticated a composition.

                Typecode
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Requirements

                Indicates the level of authority of the attestation.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                52. Composition.attester:legalAuthenticator
                Slice NamelegalAuthenticator
                Definition

                A participant who has attested to the accuracy of the composition/document.

                Shortlegal authenticatorAttests to accuracy of composition
                Comments

                Only list each attester once.

                Control0..1*
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Requirements

                Identifies responsibility for the accuracy of the composition content.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                54. Composition.attester:legalAuthenticator.modifierExtension
                Definition

                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                ShortExtensions that cannot be ignored even if unrecognized
                Comments

                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                Summarytrue
                Requirements

                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                Alternate Namesextensions, user content, modifiers
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                56. Composition.attester:legalAuthenticator.mode
                Definition

                The type of attestation the authenticator offers.

                Shortpersonal | professional | legal | official
                Control1..1
                BindingThe codes SHALL be taken from CompositionAttestationModehttp://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1
                (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                The way in which a person authenticated a composition.

                Typecode
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Requirements

                Indicates the level of authority of the attestation.

                Fixed Valuelegal
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                58. Composition.attester:legalAuthenticator.party
                Definition

                Who attested the composition in the specified way.

                ShortWho attested the composition
                Control10..1
                TypeReference(CH Core Patient EPR, RelatedPerson, CH Core Practitioner EPR, CH Core PractitionerRole EPR, Patient, Practitioner, PractitionerRole, Organization)
                Is Modifierfalse
                Summaryfalse
                Requirements

                Identifies who has taken on the responsibility for accuracy of the composition content.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                60. Composition.attester:legalAuthenticator.party.reference
                Definition

                A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                ShortLiteral reference, Relative, internal or absolute URL
                Comments

                Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                Control10..1
                This element is affected by the following invariants: ref-1
                Typestring
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                62. Composition.custodian
                Definition

                Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information.

                ShortOrganization which maintains the composition
                Comments

                This is useful when documents are derived from a composition - provides guidance for how to get the latest version of the document. This is optional because this is sometimes not known by the authoring system, and can be inferred by context. However, it is important that this information be known when working with a derived document, so providing a custodian is encouraged.

                Control0..1
                TypeReference(CH Core Organization EPR, Organization)
                Is Modifierfalse
                Summarytrue
                Requirements

                Identifies where to go to find the current version, where to report issues, etc.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                64. Composition.custodian.reference
                Definition

                A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                ShortLiteral reference, Relative, internal or absolute URL
                Comments

                Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                Control10..1
                This element is affected by the following invariants: ref-1
                Typestring
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                66. Composition.section
                Definition

                The root of the sections that make up the composition.

                ShortComposition is broken into sections
                Control0..*
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Invariantscmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                cmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                SlicingThis element introduces a set of slices on Composition.section. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • pattern @ code
                • 68. Composition.section.modifierExtension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                  ShortExtensions that cannot be ignored even if unrecognized
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                  Summarytrue
                  Requirements

                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                  Alternate Namesextensions, user content, modifiers
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  70. Composition.section.author
                  Definition

                  Identifies who is responsible for the information in this section, not necessarily who typed it in.

                  ShortWho and/or what authored the section
                  Control0..*
                  TypeReference(CH Core Practitioner EPR, CH Core PractitionerRole EPR, Device, CH Core Patient EPR, RelatedPerson, CH Core Organization EPR, Practitioner, PractitionerRole, Patient, Organization)
                  Is Modifierfalse
                  Summaryfalse
                  Requirements

                  Identifies who is responsible for the content.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  72. Composition.section:originalRepresentation
                  Slice NameoriginalRepresentation
                  Definition

                  The root of the sections that make up the composition.

                  ShortContains the original representation as a PDF of the current document.Composition is broken into sections
                  Control0..1*
                  TypeBackboneElement
                  Is Modifierfalse
                  Summaryfalse
                  Invariantscmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                  cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                  ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  cmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                  cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                  74. Composition.section:originalRepresentation.modifierExtension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                  ShortExtensions that cannot be ignored even if unrecognized
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                  Summarytrue
                  Requirements

                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                  Alternate Namesextensions, user content, modifiers
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  76. Composition.section:originalRepresentation.title
                  Definition

                  The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

                  ShortOriginal representationLabel for section (e.g. for ToC)
                  Comments

                  The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

                  Control10..1
                  Typestring
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Requirements

                  Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

                  Alternate Namesheader, label, caption
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  78. Composition.section:originalRepresentation.code
                  Definition

                  A code identifying the kind of content contained within the section. This must be consistent with the section title.

                  ShortClassification of section (recommended)
                  Comments

                  The code identifies the section for an automated processor of the document. This is particularly relevant when using profiles to control the structure of the document.

                  If the section has content (instead of sub-sections), the section.code does not change the meaning or interpretation of the resource that is the content of the section in the comments for the section.code.

                  Control10..1
                  BindingFor example codes, see DocumentSectionCodeshttp://hl7.org/fhir/ValueSet/doc-section-codes
                  (example to http://hl7.org/fhir/ValueSet/doc-section-codes)

                  Classification of a section of a composition/document.

                  TypeCodeableConcept
                  Is Modifierfalse
                  Summaryfalse
                  Requirements

                  Provides computable standardized labels to topics within the document.

                  Pattern Value{
                    "coding" : [{
                      "system" : "http://loinc.org",
                      "code" : "55108-5"
                    }]
                  }
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  80. Composition.section:originalRepresentation.text
                  Definition

                  A human-readable narrative that contains the attested content of the section, used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative.

                  ShortRepresentation of the original viewText summary of the section, for human interpretation
                  Comments

                  Document profiles may define what content should be represented in the narrative to ensure clinical safety.

                  Control10..1
                  This element is affected by the following invariants: cmp-1
                  TypeNarrative
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  82. Composition.section:originalRepresentation.entry
                  Definition

                  A reference to the actual resource from which the narrative in the section is derived.

                  ShortAccording to the EPR ordonnance the PDF has to be in PDF/A-1 or PDF/A-2 format.A reference to data that supports this section
                  Comments

                  If there are no entries in the list, an emptyReason SHOULD be provided.

                  Control10..1*
                  This element is affected by the following invariants: cmp-2
                  TypeReference(Binary, Resource)
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  84. Composition.section:originalRepresentation.entry.extension:narrativeLink
                  Slice NamenarrativeLink
                  Definition

                  A human language representation of the concept (resource/element), as a url that is a reference to a portion of the narrative of a resource (DomainResource.text or Composition.section.text).

                  ShortnarrativeLink to img src attribute
                  Comments

                  It's also possible to link to the resource narrative using the originalText extension which claims that the data is derived from the text provided or linked to.

                  Control0..1
                  TypeExtension(Narrative Link) (Extension Type: url)
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  86. Composition.section:originalRepresentation.section
                  Definition

                  A nested sub-section within this section.

                  ShortNested Section
                  Comments

                  Nested sections are primarily used to help human readers navigate to particular portions of the document.

                  Control0..0*
                  This element is affected by the following invariants: cmp-1
                  TypeSee ttp://hl7.org/fhir/StructureDefinition/Composition#Composition.section
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

                  Guidance on how to interpret the contents of this table can be found here

                  0. Composition
                  Definition

                  A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. A Composition defines the structure and narrative content necessary for a document. However, a Composition alone does not constitute a document. Rather, the Composition must be the first entry in a Bundle where Bundle.type=document, and any other resources referenced from Composition must be included as subsequent entries in the Bundle (for example Patient, Practitioner, Encounter, etc.).

                  ShortCH Core Composition EPR
                  Comments

                  While the focus of this specification is on patient-specific clinical statements, this resource can also apply to other healthcare-related statements such as study protocol designs, healthcare invoices and other activities that are not necessarily patient-specific or clinical.

                  Control0..*
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
                  dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
                  dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
                  dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
                  dom-6: A resource should have narrative for robust management (text.`div`.exists())
                  2. Composition.id
                  Definition

                  The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

                  ShortLogical id of this artifact
                  Comments

                  The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

                  Control0..1
                  Typeid
                  Is Modifierfalse
                  Summarytrue
                  4. Composition.meta
                  Definition

                  The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

                  ShortMetadata about the resource
                  Control0..1
                  TypeMeta
                  Is Modifierfalse
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  6. Composition.implicitRules
                  Definition

                  A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

                  ShortA set of rules under which this content was created
                  Comments

                  Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

                  Control0..1
                  Typeuri
                  Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  8. Composition.language
                  Definition

                  The base language in which the resource is written.

                  ShortLanguage of the resource content
                  Comments

                  Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

                  Control1..1
                  BindingThe codes SHOULD be taken from CommonLanguages
                  (preferred to http://hl7.org/fhir/ValueSet/languages)

                  A human language.

                  Additional BindingsPurpose
                  AllLanguagesMax Binding
                  Typecode
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  10. Composition.text
                  Definition

                  A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

                  ShortText summary of the resource, for human interpretation
                  Comments

                  Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

                  Control0..1
                  TypeNarrative
                  Is Modifierfalse
                  Summaryfalse
                  Alternate Namesnarrative, html, xhtml, display
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  12. Composition.contained
                  Definition

                  These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

                  ShortContained, inline Resources
                  Comments

                  This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

                  Control0..*
                  TypeResource
                  Is Modifierfalse
                  Summaryfalse
                  Alternate Namesinline resources, anonymous resources, contained resources
                  14. Composition.extension
                  Definition

                  An Extension

                  ShortExtension
                  Control0..*
                  TypeExtension
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  SlicingThis element introduces a set of slices on Composition.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ url
                  • 16. Composition.extension:informationRecipient
                    Slice NameinformationRecipient
                    Definition

                    Extension to define the information about the recipient

                    ShortExtension
                    Control0..*
                    This element is affected by the following invariants: ele-1
                    TypeExtension(EPR Information Recipient) (Extension Type: Reference)
                    Is Modifierfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    18. Composition.extension:dataEnterer
                    Slice NamedataEnterer
                    Definition

                    Extension to define the information about the person and organization that entered data and the time of the data input

                    ShortExtension
                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeExtension(EPR Data Enterer) (Complex Extension)
                    Is Modifierfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    20. Composition.modifierExtension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                    ShortExtensions that cannot be ignored
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                    Summaryfalse
                    Requirements

                    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                    Alternate Namesextensions, user content
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    22. Composition.identifier
                    Definition

                    A version-independent identifier for the Composition. This identifier stays constant as the composition is changed over time.

                    ShortVersion-independent identifier for the Composition
                    Comments

                    Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.

                    NoteThis is a business identifier, not a resource identifier (see discussion)
                    Control1..1
                    TypeIdentifier
                    Is Modifierfalse
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    24. Composition.identifier.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    26. Composition.identifier.extension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                    ShortAdditional content defined by implementations
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesextensions, user content
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on Composition.identifier.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 28. Composition.identifier.use
                      Definition

                      The purpose of this identifier.

                      Shortusual | official | temp | secondary | old (If known)
                      Comments

                      Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

                      Control0..1
                      BindingThe codes SHALL be taken from IdentifierUse
                      (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

                      Identifies the purpose for this identifier, if known .

                      Typecode
                      Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      30. Composition.identifier.type
                      Definition

                      A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

                      ShortDescription of identifier
                      Comments

                      This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

                      Control0..1
                      BindingUnless not suitable, these codes SHALL be taken from Identifier Type Codes
                      (extensible to http://hl7.org/fhir/ValueSet/identifier-type)

                      A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

                      TypeCodeableConcept
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Allows users to make use of identifiers when the identifier system is not known.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      32. Composition.identifier.system
                      Definition

                      Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

                      ShortThe namespace for the identifier value
                      Comments

                      Identifier.system is always case sensitive.

                      Control1..1
                      Typeuri
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

                      Fixed Valueurn:ietf:rfc:3986
                      Example<br/><b>General</b>:http://www.acme.com/identifiers/patient
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      34. Composition.identifier.value
                      Definition

                      The portion of the identifier typically relevant to the user and which is unique within the context of the system.

                      ShortThe value that is unique
                      Comments

                      If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

                      Control1..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Example<br/><b>General</b>:123456
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      36. Composition.identifier.period
                      Definition

                      Time period during which identifier is/was valid for use.

                      ShortTime period when id is/was valid for use
                      Control0..1
                      TypePeriod
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      38. Composition.identifier.assigner
                      Definition

                      Organization that issued/manages the identifier.

                      ShortOrganization that issued id (may be just text)
                      Comments

                      The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

                      Control0..1
                      TypeReference(Organization)
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      40. Composition.status
                      Definition

                      The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.

                      Shortpreliminary | final | amended | entered-in-error
                      Comments

                      If a composition is marked as withdrawn, the compositions/documents in the series, or data from the composition or document series, should never be displayed to a user without being clearly marked as untrustworthy. The flag "entered-in-error" is why this element is labeled as a modifier of other elements.

                      Some reporting work flows require that the original narrative of a final document never be altered; instead, only new narrative can be added. The composition resource has no explicit status for explicitly noting whether this business rule is in effect. This would be handled by an extension if required.

                      Control1..1
                      BindingThe codes SHALL be taken from CompositionStatus
                      (required to http://hl7.org/fhir/ValueSet/composition-status|4.0.1)

                      The workflow/clinical status of the composition.

                      Typecode
                      Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Need to be able to mark interim, amended, or withdrawn compositions or documents.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      42. Composition.type
                      Definition

                      Specifies the particular kind of composition (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the composition.

                      ShortKind of composition
                      Comments

                      For Composition type, LOINC is ubiquitous and strongly endorsed by HL7. Most implementation guides will require a specific LOINC code, or use LOINC as an extensible binding.

                      Control1..1
                      BindingUnless not suitable, these codes SHALL be taken from DocumentEntry.typeCode
                      (extensible to http://fhir.ch/ig/ch-term/ValueSet/DocumentEntry.typeCode)
                      TypeCodeableConcept
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Key metadata element describing the composition, used in searching/filtering.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      44. Composition.category
                      Definition

                      A categorization for the type of the composition - helps for indexing and searching. This may be implied by or derived from the code specified in the Composition Type.

                      ShortCategorization of Composition
                      Comments

                      This is a metadata field from XDS/MHD.

                      Control0..*
                      BindingFor example codes, see DocumentClassValueSet
                      (example to http://hl7.org/fhir/ValueSet/document-classcodes)

                      High-level kind of a clinical document at a macro level.

                      TypeCodeableConcept
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      46. Composition.subject
                      Definition

                      Who or what the composition is about. The composition can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of livestock, or a set of patients that share a common exposure).

                      ShortWho and/or what the composition is about
                      Comments

                      For clinical documents, this is usually the patient.

                      Control1..1
                      TypeReference(CH Core Patient EPR)
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      48. Composition.subject.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      50. Composition.subject.extension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                      ShortAdditional content defined by implementations
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesextensions, user content
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      SlicingThis element introduces a set of slices on Composition.subject.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 52. Composition.subject.reference
                        Definition

                        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                        ShortLiteral reference, Relative, internal or absolute URL
                        Comments

                        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                        Control1..1
                        This element is affected by the following invariants: ref-1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        54. Composition.subject.type
                        Definition

                        The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                        The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                        ShortType the reference refers to (e.g. "Patient")
                        Comments

                        This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                        Control0..1
                        BindingUnless not suitable, these codes SHALL be taken from ResourceType
                        (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                        Aa resource (or, for logical models, the URI of the logical model).

                        Typeuri
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        56. Composition.subject.identifier
                        Definition

                        An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                        ShortLogical reference, when literal reference is not known
                        Comments

                        When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                        When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                        Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                        Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                        NoteThis is a business identifier, not a resource identifier (see discussion)
                        Control0..1
                        TypeIdentifier
                        Is Modifierfalse
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        58. Composition.subject.display
                        Definition

                        Plain text narrative that identifies the resource in addition to the resource reference.

                        ShortText alternative for the resource
                        Comments

                        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                        Control0..1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        60. Composition.encounter
                        Definition

                        Describes the clinical encounter or type of care this documentation is associated with.

                        ShortContext of the Composition
                        Control0..1
                        TypeReference(CH Core Encounter)
                        Is Modifierfalse
                        Summarytrue
                        Requirements

                        Provides context for the composition and supports searching.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        62. Composition.date
                        Definition

                        The composition editing time, when the composition was last logically changed by the author.

                        ShortComposition editing time
                        Comments

                        The Last Modified Date on the composition may be after the date of the document was attested without being changed.

                        Control1..1
                        TypedateTime
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summarytrue
                        Requirements

                        dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring. When packaged in a document, Bundle.timestamp is the date of packaging.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        64. Composition.author
                        Definition

                        Identifies who is responsible for the information in the composition, not necessarily who typed it in.

                        ShortWho and/or what authored the composition
                        Control1..*
                        TypeReference(CH Core Practitioner EPR, CH Core PractitionerRole EPR, Device, CH Core Patient EPR, RelatedPerson, CH Core Organization EPR)
                        Is Modifierfalse
                        Summarytrue
                        Requirements

                        Identifies who is responsible for the content.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        66. Composition.author.id
                        Definition

                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                        ShortUnique id for inter-element referencing
                        Control0..1
                        Typestring
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        68. Composition.author.extension
                        Definition

                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                        ShortAdditional content defined by implementations
                        Comments

                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                        Control0..*
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Alternate Namesextensions, user content
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        SlicingThis element introduces a set of slices on Composition.author.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 70. Composition.author.extension:time
                          Slice Nametime
                          Definition

                          Extension to define the timestamp of the authorship/data input

                          ShortTimestamp of the authorship/data input
                          Control0..1
                          TypeExtension(EPR Time) (Extension Type: dateTime)
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          72. Composition.author.reference
                          Definition

                          A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                          ShortLiteral reference, Relative, internal or absolute URL
                          Comments

                          Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                          Control1..1
                          This element is affected by the following invariants: ref-1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          74. Composition.author.type
                          Definition

                          The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                          The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                          ShortType the reference refers to (e.g. "Patient")
                          Comments

                          This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                          Control0..1
                          BindingUnless not suitable, these codes SHALL be taken from ResourceType
                          (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                          Aa resource (or, for logical models, the URI of the logical model).

                          Typeuri
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          76. Composition.author.identifier
                          Definition

                          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                          ShortLogical reference, when literal reference is not known
                          Comments

                          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                          NoteThis is a business identifier, not a resource identifier (see discussion)
                          Control0..1
                          TypeIdentifier
                          Is Modifierfalse
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          78. Composition.author.display
                          Definition

                          Plain text narrative that identifies the resource in addition to the resource reference.

                          ShortText alternative for the resource
                          Comments

                          This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                          Control0..1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          80. Composition.title
                          Definition

                          Official human-readable label for the composition.

                          ShortHuman Readable name/title
                          Comments

                          For many compositions, the title is the same as the text or a display name of Composition.type (e.g. a "consultation" or "progress note"). Note that CDA does not make title mandatory, but there are no known cases where it is useful for title to be omitted, so it is mandatory here. Feedback on this requirement is welcome during the trial use period.

                          Control1..1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          82. Composition.confidentiality
                          Definition

                          The code specifying the level of confidentiality of the Composition.

                          ShortAs defined by affinity domain
                          Comments

                          The exact use of this element, and enforcement and issues related to highly sensitive documents are out of scope for the base specification, and delegated to implementation profiles (see security section). This element is labeled as a modifier because highly confidential documents must not be treated as if they are not.

                          Control1..1
                          BindingThe codes SHALL be taken from v3.ConfidentialityClassification (2014-03-26)
                          (required to http://terminology.hl7.org/ValueSet/v3-ConfidentialityClassification|2014-03-26)

                          Codes specifying the level of confidentiality of the composition.

                          Typecode
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          84. Composition.confidentiality.id
                          Definition

                          unique id for the element within a resource (for internal references)

                          Shortxml:id (or equivalent in JSON)
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          86. Composition.confidentiality.extension
                          Definition

                          An Extension

                          ShortExtension
                          Control1..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          SlicingThis element introduces a set of slices on Composition.confidentiality.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • value @ url
                          • 88. Composition.confidentiality.extension:confidentialityCode
                            Slice NameconfidentialityCode
                            Definition

                            Extension to define the confidentiality code of the document

                            ShortExtension
                            Control1..1
                            This element is affected by the following invariants: ele-1
                            TypeExtension(EPR Confidentiality Code) (Extension Type: CodeableConcept)
                            Is Modifierfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            90. Composition.confidentiality.value
                            Definition

                            Primitive value for code

                            ShortPrimitive value for code
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            92. Composition.attester
                            Definition

                            A participant who has attested to the accuracy of the composition/document.

                            ShortAttests to accuracy of composition
                            Comments

                            Only list each attester once.

                            Control0..*
                            TypeBackboneElement
                            Is Modifierfalse
                            Summaryfalse
                            Requirements

                            Identifies responsibility for the accuracy of the composition content.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            SlicingThis element introduces a set of slices on Composition.attester. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ mode
                            • 94. Composition.attester.id
                              Definition

                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                              ShortUnique id for inter-element referencing
                              Control0..1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              96. Composition.attester.extension
                              Definition

                              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                              ShortAdditional content defined by implementations
                              Comments

                              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                              Control0..*
                              TypeExtension
                              Is Modifierfalse
                              Summaryfalse
                              Alternate Namesextensions, user content
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              98. Composition.attester.modifierExtension
                              Definition

                              May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                              ShortExtensions that cannot be ignored even if unrecognized
                              Comments

                              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                              Control0..*
                              TypeExtension
                              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                              Summarytrue
                              Requirements

                              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                              Alternate Namesextensions, user content, modifiers
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              100. Composition.attester.mode
                              Definition

                              The type of attestation the authenticator offers.

                              Shortpersonal | professional | legal | official
                              Control1..1
                              BindingThe codes SHALL be taken from CompositionAttestationMode
                              (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                              The way in which a person authenticated a composition.

                              Typecode
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Requirements

                              Indicates the level of authority of the attestation.

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              102. Composition.attester.time
                              Definition

                              When the composition was attested by the party.

                              ShortWhen the composition was attested
                              Control0..1
                              TypedateTime
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Requirements

                              Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              104. Composition.attester.party
                              Definition

                              Who attested the composition in the specified way.

                              ShortWho attested the composition
                              Control0..1
                              TypeReference(CH Core Patient, RelatedPerson, CH Core Practitioner, CH Core PractitionerRole, CH Core Organization)
                              Is Modifierfalse
                              Summaryfalse
                              Requirements

                              Identifies who has taken on the responsibility for accuracy of the composition content.

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              106. Composition.attester.party.id
                              Definition

                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                              ShortUnique id for inter-element referencing
                              Control0..1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              108. Composition.attester.party.extension
                              Definition

                              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                              ShortAdditional content defined by implementations
                              Comments

                              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                              Control0..*
                              TypeExtension
                              Is Modifierfalse
                              Summaryfalse
                              Alternate Namesextensions, user content
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              SlicingThis element introduces a set of slices on Composition.attester.party.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • value @ url
                              • 110. Composition.attester.party.reference
                                Definition

                                A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                ShortLiteral reference, Relative, internal or absolute URL
                                Comments

                                Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                Control1..1
                                This element is affected by the following invariants: ref-1
                                Typestring
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                112. Composition.attester.party.type
                                Definition

                                The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                ShortType the reference refers to (e.g. "Patient")
                                Comments

                                This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                Control0..1
                                BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                Aa resource (or, for logical models, the URI of the logical model).

                                Typeuri
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                114. Composition.attester.party.identifier
                                Definition

                                An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                ShortLogical reference, when literal reference is not known
                                Comments

                                When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                NoteThis is a business identifier, not a resource identifier (see discussion)
                                Control0..1
                                TypeIdentifier
                                Is Modifierfalse
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                116. Composition.attester.party.display
                                Definition

                                Plain text narrative that identifies the resource in addition to the resource reference.

                                ShortText alternative for the resource
                                Comments

                                This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                Control0..1
                                Typestring
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                118. Composition.attester:legalAuthenticator
                                Slice NamelegalAuthenticator
                                Definition

                                A participant who has attested to the accuracy of the composition/document.

                                Shortlegal authenticator
                                Comments

                                Only list each attester once.

                                Control0..1
                                TypeBackboneElement
                                Is Modifierfalse
                                Summaryfalse
                                Requirements

                                Identifies responsibility for the accuracy of the composition content.

                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                120. Composition.attester:legalAuthenticator.id
                                Definition

                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                ShortUnique id for inter-element referencing
                                Control0..1
                                Typestring
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                122. Composition.attester:legalAuthenticator.extension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                ShortAdditional content defined by implementations
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                124. Composition.attester:legalAuthenticator.modifierExtension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                ShortExtensions that cannot be ignored even if unrecognized
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                Summarytrue
                                Requirements

                                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                Alternate Namesextensions, user content, modifiers
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                126. Composition.attester:legalAuthenticator.mode
                                Definition

                                The type of attestation the authenticator offers.

                                Shortpersonal | professional | legal | official
                                Control1..1
                                BindingThe codes SHALL be taken from CompositionAttestationMode
                                (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                                The way in which a person authenticated a composition.

                                Typecode
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summaryfalse
                                Requirements

                                Indicates the level of authority of the attestation.

                                Fixed Valuelegal
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                128. Composition.attester:legalAuthenticator.time
                                Definition

                                When the composition was attested by the party.

                                ShortWhen the composition was attested
                                Control0..1
                                TypedateTime
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summaryfalse
                                Requirements

                                Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).

                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                130. Composition.attester:legalAuthenticator.party
                                Definition

                                Who attested the composition in the specified way.

                                ShortWho attested the composition
                                Control1..1
                                TypeReference(CH Core Patient EPR, RelatedPerson, CH Core Practitioner EPR, CH Core PractitionerRole EPR)
                                Is Modifierfalse
                                Summaryfalse
                                Requirements

                                Identifies who has taken on the responsibility for accuracy of the composition content.

                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                132. Composition.attester:legalAuthenticator.party.id
                                Definition

                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                ShortUnique id for inter-element referencing
                                Control0..1
                                Typestring
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                134. Composition.attester:legalAuthenticator.party.extension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                ShortAdditional content defined by implementations
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                SlicingThis element introduces a set of slices on Composition.attester.party.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                • value @ url
                                • 136. Composition.attester:legalAuthenticator.party.reference
                                  Definition

                                  A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                  ShortLiteral reference, Relative, internal or absolute URL
                                  Comments

                                  Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                  Control1..1
                                  This element is affected by the following invariants: ref-1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  138. Composition.attester:legalAuthenticator.party.type
                                  Definition

                                  The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                  The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                  ShortType the reference refers to (e.g. "Patient")
                                  Comments

                                  This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                  Control0..1
                                  BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                  (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                  Aa resource (or, for logical models, the URI of the logical model).

                                  Typeuri
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  140. Composition.attester:legalAuthenticator.party.identifier
                                  Definition

                                  An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                  ShortLogical reference, when literal reference is not known
                                  Comments

                                  When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                  When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                  Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                  Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                  NoteThis is a business identifier, not a resource identifier (see discussion)
                                  Control0..1
                                  TypeIdentifier
                                  Is Modifierfalse
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  142. Composition.attester:legalAuthenticator.party.display
                                  Definition

                                  Plain text narrative that identifies the resource in addition to the resource reference.

                                  ShortText alternative for the resource
                                  Comments

                                  This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  144. Composition.custodian
                                  Definition

                                  Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information.

                                  ShortOrganization which maintains the composition
                                  Comments

                                  This is useful when documents are derived from a composition - provides guidance for how to get the latest version of the document. This is optional because this is sometimes not known by the authoring system, and can be inferred by context. However, it is important that this information be known when working with a derived document, so providing a custodian is encouraged.

                                  Control0..1
                                  TypeReference(CH Core Organization EPR)
                                  Is Modifierfalse
                                  Summarytrue
                                  Requirements

                                  Identifies where to go to find the current version, where to report issues, etc.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  146. Composition.custodian.id
                                  Definition

                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                  ShortUnique id for inter-element referencing
                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  148. Composition.custodian.extension
                                  Definition

                                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                  ShortAdditional content defined by implementations
                                  Comments

                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                  Control0..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Alternate Namesextensions, user content
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  SlicingThis element introduces a set of slices on Composition.custodian.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                  • value @ url
                                  • 150. Composition.custodian.reference
                                    Definition

                                    A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                    ShortLiteral reference, Relative, internal or absolute URL
                                    Comments

                                    Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                    Control1..1
                                    This element is affected by the following invariants: ref-1
                                    Typestring
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    152. Composition.custodian.type
                                    Definition

                                    The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                    The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                    ShortType the reference refers to (e.g. "Patient")
                                    Comments

                                    This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                    Control0..1
                                    BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                    (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                    Aa resource (or, for logical models, the URI of the logical model).

                                    Typeuri
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    154. Composition.custodian.identifier
                                    Definition

                                    An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                    ShortLogical reference, when literal reference is not known
                                    Comments

                                    When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                    When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                    Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                    Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                    NoteThis is a business identifier, not a resource identifier (see discussion)
                                    Control0..1
                                    TypeIdentifier
                                    Is Modifierfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    156. Composition.custodian.display
                                    Definition

                                    Plain text narrative that identifies the resource in addition to the resource reference.

                                    ShortText alternative for the resource
                                    Comments

                                    This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    158. Composition.relatesTo
                                    Definition

                                    Relationships that this composition has with other compositions or documents that already exist.

                                    ShortRelationships to other compositions/documents
                                    Comments

                                    A document is a version specific composition.

                                    Control0..*
                                    TypeBackboneElement
                                    Is Modifierfalse
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    160. Composition.relatesTo.id
                                    Definition

                                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                    ShortUnique id for inter-element referencing
                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    XML FormatIn the XML format, this property is represented as an attribute.
                                    Summaryfalse
                                    162. Composition.relatesTo.extension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                    ShortAdditional content defined by implementations
                                    Comments

                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                    Control0..*
                                    TypeExtension
                                    Is Modifierfalse
                                    Summaryfalse
                                    Alternate Namesextensions, user content
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    164. Composition.relatesTo.modifierExtension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                    ShortExtensions that cannot be ignored even if unrecognized
                                    Comments

                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                    Control0..*
                                    TypeExtension
                                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                    Summarytrue
                                    Requirements

                                    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                    Alternate Namesextensions, user content, modifiers
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    166. Composition.relatesTo.code
                                    Definition

                                    The type of relationship that this composition has with anther composition or document.

                                    Shortreplaces | transforms | signs | appends
                                    Comments

                                    If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                                    Control1..1
                                    BindingThe codes SHALL be taken from DocumentRelationshipType
                                    (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                                    The type of relationship between documents.

                                    Typecode
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    168. Composition.relatesTo.target[x]
                                    Definition

                                    The target composition/document of this relationship.

                                    ShortTarget of the relationship
                                    Control1..1
                                    TypeChoice of: Identifier, Reference(CH Core Composition EPR)
                                    [x] NoteSee Choice of Data Types for further information about how to use [x]
                                    Is Modifierfalse
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    170. Composition.event
                                    Definition

                                    The clinical service, such as a colonoscopy or an appendectomy, being documented.

                                    ShortThe clinical service(s) being documented
                                    Comments

                                    The event needs to be consistent with the type element, though can provide further information if desired.

                                    Control0..*
                                    TypeBackboneElement
                                    Is Modifierfalse
                                    Summarytrue
                                    Requirements

                                    Provides context for the composition and creates a linkage between a resource describing an event and the composition created describing the event.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    172. Composition.event.id
                                    Definition

                                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                    ShortUnique id for inter-element referencing
                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    XML FormatIn the XML format, this property is represented as an attribute.
                                    Summaryfalse
                                    174. Composition.event.extension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                    ShortAdditional content defined by implementations
                                    Comments

                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                    Control0..*
                                    TypeExtension
                                    Is Modifierfalse
                                    Summaryfalse
                                    Alternate Namesextensions, user content
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    176. Composition.event.modifierExtension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                    ShortExtensions that cannot be ignored even if unrecognized
                                    Comments

                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                    Control0..*
                                    TypeExtension
                                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                    Summarytrue
                                    Requirements

                                    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                    Alternate Namesextensions, user content, modifiers
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    178. Composition.event.code
                                    Definition

                                    This list of codes represents the main clinical acts, such as a colonoscopy or an appendectomy, being documented. In some cases, the event is inherent in the typeCode, such as a "History and Physical Report" in which the procedure being documented is necessarily a "History and Physical" act.

                                    ShortCode(s) that apply to the event being documented
                                    Comments

                                    An event can further specialize the act inherent in the typeCode, such as where it is simply "Procedure Report" and the procedure was a "colonoscopy". If one or more eventCodes are included, they SHALL NOT conflict with the values inherent in the classCode, practiceSettingCode or typeCode, as such a conflict would create an ambiguous situation. This short list of codes is provided to be used as key words for certain types of queries.

                                    Control0..*
                                    BindingFor example codes, see v3 Code System ActCode
                                    (example to http://terminology.hl7.org/ValueSet/v3-ActCode)

                                    This list of codes represents the main clinical acts being documented.

                                    TypeCodeableConcept
                                    Is Modifierfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    180. Composition.event.period
                                    Definition

                                    The period of time covered by the documentation. There is no assertion that the documentation is a complete representation for this period, only that it documents events during this time.

                                    ShortThe period covered by the documentation
                                    Control0..1
                                    TypePeriod
                                    Is Modifierfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    182. Composition.event.detail
                                    Definition

                                    The description and/or reference of the event(s) being documented. For example, this could be used to document such a colonoscopy or an appendectomy.

                                    ShortThe event(s) being documented
                                    Control0..*
                                    TypeReference(Resource)
                                    Is Modifierfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    184. Composition.section
                                    Definition

                                    The root of the sections that make up the composition.

                                    ShortComposition is broken into sections
                                    Control0..*
                                    TypeBackboneElement
                                    Is Modifierfalse
                                    Summaryfalse
                                    Invariantscmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                                    cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                                    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    SlicingThis element introduces a set of slices on Composition.section. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                    • pattern @ code
                                    • 186. Composition.section.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      188. Composition.section.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                      ShortAdditional content defined by implementations
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      190. Composition.section.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      Requirements

                                      Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                      Alternate Namesextensions, user content, modifiers
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      192. Composition.section.title
                                      Definition

                                      The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

                                      ShortLabel for section (e.g. for ToC)
                                      Comments

                                      The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summaryfalse
                                      Requirements

                                      Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

                                      Alternate Namesheader, label, caption
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      194. Composition.section.code
                                      Definition

                                      A code identifying the kind of content contained within the section. This must be consistent with the section title.

                                      ShortClassification of section (recommended)
                                      Comments

                                      The code identifies the section for an automated processor of the document. This is particularly relevant when using profiles to control the structure of the document.

                                      If the section has content (instead of sub-sections), the section.code does not change the meaning or interpretation of the resource that is the content of the section in the comments for the section.code.

                                      Control0..1
                                      BindingFor example codes, see DocumentSectionCodes
                                      (example to http://hl7.org/fhir/ValueSet/doc-section-codes)

                                      Classification of a section of a composition/document.

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Provides computable standardized labels to topics within the document.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      196. Composition.section.author
                                      Definition

                                      Identifies who is responsible for the information in this section, not necessarily who typed it in.

                                      ShortWho and/or what authored the section
                                      Control0..*
                                      TypeReference(CH Core Practitioner EPR, CH Core PractitionerRole EPR, Device, CH Core Patient EPR, RelatedPerson, CH Core Organization EPR)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Identifies who is responsible for the content.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      198. Composition.section.focus
                                      Definition

                                      The actual focus of the section when it is not the subject of the composition, but instead represents something or someone associated with the subject such as (for a patient subject) a spouse, parent, fetus, or donor. If not focus is specified, the focus is assumed to be focus of the parent section, or, for a section in the Composition itself, the subject of the composition. Sections with a focus SHALL only include resources where the logical subject (patient, subject, focus, etc.) matches the section focus, or the resources have no logical subject (few resources).

                                      ShortWho/what the section is about, when it is not about the subject of composition
                                      Comments

                                      Typically, sections in a doument are about the subject of the document, whether that is a patient, or group of patients, location, or device, or whatever. For some kind of documents, some sections actually contain data about related entities. Typical examples are a section in a newborn discharge summary concerning the mother, or family history documents, with a section about each family member, though there are many other examples.

                                      Control0..1
                                      TypeReference(Resource)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      200. Composition.section.text
                                      Definition

                                      A human-readable narrative that contains the attested content of the section, used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative.

                                      ShortText summary of the section, for human interpretation
                                      Comments

                                      Document profiles may define what content should be represented in the narrative to ensure clinical safety.

                                      Control0..1
                                      This element is affected by the following invariants: cmp-1
                                      TypeNarrative
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      202. Composition.section.mode
                                      Definition

                                      How the entry list was prepared - whether it is a working list that is suitable for being maintained on an ongoing basis, or if it represents a snapshot of a list of items from another source, or whether it is a prepared list where items may be marked as added, modified or deleted.

                                      Shortworking | snapshot | changes
                                      Comments

                                      This element is labeled as a modifier because a change list must not be misunderstood as a complete list.

                                      Control0..1
                                      BindingThe codes SHALL be taken from ListMode
                                      (required to http://hl7.org/fhir/ValueSet/list-mode|4.0.1)

                                      The processing mode that applies to this section.

                                      Typecode
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summaryfalse
                                      Requirements

                                      Sections are used in various ways, and it must be known in what way it is safe to use the entries in them.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      204. Composition.section.orderedBy
                                      Definition

                                      Specifies the order applied to the items in the section entries.

                                      ShortOrder of section entries
                                      Comments

                                      Applications SHOULD render ordered lists in the order provided, but MAY allow users to re-order based on their own preferences as well. If there is no order specified, the order is unknown, though there may still be some order.

                                      Control0..1
                                      BindingThe codes SHOULD be taken from ListOrderCodes
                                      (preferred to http://hl7.org/fhir/ValueSet/list-order)

                                      What order applies to the items in the entry.

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Important for presentation and rendering. Lists may be sorted to place more important information first or to group related entries.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      206. Composition.section.entry
                                      Definition

                                      A reference to the actual resource from which the narrative in the section is derived.

                                      ShortA reference to data that supports this section
                                      Comments

                                      If there are no entries in the list, an emptyReason SHOULD be provided.

                                      Control0..*
                                      This element is affected by the following invariants: cmp-2
                                      TypeReference(Resource)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      208. Composition.section.emptyReason
                                      Definition

                                      If the section is empty, why the list is empty. An empty section typically has some text explaining the empty reason.

                                      ShortWhy the section is empty
                                      Comments

                                      The various reasons for an empty section make a significant interpretation to its interpretation. Note that this code is for use when the entire section content has been suppressed, and not for when individual items are omitted - implementers may consider using a text note or a flag on an entry in these cases.

                                      Control0..1
                                      This element is affected by the following invariants: cmp-2
                                      BindingThe codes SHOULD be taken from ListEmptyReasons
                                      (preferred to http://hl7.org/fhir/ValueSet/list-empty-reason)

                                      If a section is empty, why it is empty.

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Allows capturing things like "none exist" or "not asked" which can be important for most lists.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      210. Composition.section.section
                                      Definition

                                      A nested sub-section within this section.

                                      ShortNested Section
                                      Comments

                                      Nested sections are primarily used to help human readers navigate to particular portions of the document.

                                      Control0..*
                                      This element is affected by the following invariants: cmp-1
                                      TypeSee ttp://hl7.org/fhir/StructureDefinition/Composition#Composition.section
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      212. Composition.section:originalRepresentation
                                      Slice NameoriginalRepresentation
                                      Definition

                                      The root of the sections that make up the composition.

                                      ShortContains the original representation as a PDF of the current document.
                                      Control0..1
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantscmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                                      cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                                      ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      214. Composition.section:originalRepresentation.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      216. Composition.section:originalRepresentation.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                      ShortAdditional content defined by implementations
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      218. Composition.section:originalRepresentation.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      Requirements

                                      Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                      Alternate Namesextensions, user content, modifiers
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      220. Composition.section:originalRepresentation.title
                                      Definition

                                      The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

                                      ShortOriginal representation
                                      Comments

                                      The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

                                      Control1..1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summaryfalse
                                      Requirements

                                      Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

                                      Alternate Namesheader, label, caption
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      222. Composition.section:originalRepresentation.code
                                      Definition

                                      A code identifying the kind of content contained within the section. This must be consistent with the section title.

                                      ShortClassification of section (recommended)
                                      Comments

                                      The code identifies the section for an automated processor of the document. This is particularly relevant when using profiles to control the structure of the document.

                                      If the section has content (instead of sub-sections), the section.code does not change the meaning or interpretation of the resource that is the content of the section in the comments for the section.code.

                                      Control1..1
                                      BindingFor example codes, see DocumentSectionCodes
                                      (example to http://hl7.org/fhir/ValueSet/doc-section-codes)

                                      Classification of a section of a composition/document.

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Provides computable standardized labels to topics within the document.

                                      Pattern Value{
                                        "coding" : [{
                                          "system" : "http://loinc.org",
                                          "code" : "55108-5"
                                        }]
                                      }
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      224. Composition.section:originalRepresentation.author
                                      Definition

                                      Identifies who is responsible for the information in this section, not necessarily who typed it in.

                                      ShortWho and/or what authored the section
                                      Control0..*
                                      TypeReference(CH Core Practitioner, CH Core PractitionerRole, Device, CH Core Patient, RelatedPerson, CH Core Organization)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Identifies who is responsible for the content.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      226. Composition.section:originalRepresentation.focus
                                      Definition

                                      The actual focus of the section when it is not the subject of the composition, but instead represents something or someone associated with the subject such as (for a patient subject) a spouse, parent, fetus, or donor. If not focus is specified, the focus is assumed to be focus of the parent section, or, for a section in the Composition itself, the subject of the composition. Sections with a focus SHALL only include resources where the logical subject (patient, subject, focus, etc.) matches the section focus, or the resources have no logical subject (few resources).

                                      ShortWho/what the section is about, when it is not about the subject of composition
                                      Comments

                                      Typically, sections in a doument are about the subject of the document, whether that is a patient, or group of patients, location, or device, or whatever. For some kind of documents, some sections actually contain data about related entities. Typical examples are a section in a newborn discharge summary concerning the mother, or family history documents, with a section about each family member, though there are many other examples.

                                      Control0..1
                                      TypeReference(Resource)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      228. Composition.section:originalRepresentation.text
                                      Definition

                                      A human-readable narrative that contains the attested content of the section, used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative.

                                      ShortRepresentation of the original view
                                      Comments

                                      Document profiles may define what content should be represented in the narrative to ensure clinical safety.

                                      Control1..1
                                      This element is affected by the following invariants: cmp-1
                                      TypeNarrative
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      230. Composition.section:originalRepresentation.mode
                                      Definition

                                      How the entry list was prepared - whether it is a working list that is suitable for being maintained on an ongoing basis, or if it represents a snapshot of a list of items from another source, or whether it is a prepared list where items may be marked as added, modified or deleted.

                                      Shortworking | snapshot | changes
                                      Comments

                                      This element is labeled as a modifier because a change list must not be misunderstood as a complete list.

                                      Control0..1
                                      BindingThe codes SHALL be taken from ListMode
                                      (required to http://hl7.org/fhir/ValueSet/list-mode|4.0.1)

                                      The processing mode that applies to this section.

                                      Typecode
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summaryfalse
                                      Requirements

                                      Sections are used in various ways, and it must be known in what way it is safe to use the entries in them.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      232. Composition.section:originalRepresentation.orderedBy
                                      Definition

                                      Specifies the order applied to the items in the section entries.

                                      ShortOrder of section entries
                                      Comments

                                      Applications SHOULD render ordered lists in the order provided, but MAY allow users to re-order based on their own preferences as well. If there is no order specified, the order is unknown, though there may still be some order.

                                      Control0..1
                                      BindingThe codes SHOULD be taken from ListOrderCodes
                                      (preferred to http://hl7.org/fhir/ValueSet/list-order)

                                      What order applies to the items in the entry.

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Important for presentation and rendering. Lists may be sorted to place more important information first or to group related entries.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      234. Composition.section:originalRepresentation.entry
                                      Definition

                                      A reference to the actual resource from which the narrative in the section is derived.

                                      ShortAccording to the EPR ordonnance the PDF has to be in PDF/A-1 or PDF/A-2 format.
                                      Comments

                                      If there are no entries in the list, an emptyReason SHOULD be provided.

                                      Control1..1
                                      This element is affected by the following invariants: cmp-2
                                      TypeReference(Binary)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      236. Composition.section:originalRepresentation.entry.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      238. Composition.section:originalRepresentation.entry.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                      ShortAdditional content defined by implementations
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      SlicingThis element introduces a set of slices on Composition.section.entry.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                      • value @ url
                                      • 240. Composition.section:originalRepresentation.entry.extension:narrativeLink
                                        Slice NamenarrativeLink
                                        Definition

                                        A human language representation of the concept (resource/element), as a url that is a reference to a portion of the narrative of a resource (DomainResource.text or Composition.section.text).

                                        ShortnarrativeLink to img src attribute
                                        Comments

                                        It's also possible to link to the resource narrative using the originalText extension which claims that the data is derived from the text provided or linked to.

                                        Control0..1
                                        TypeExtension(Narrative Link) (Extension Type: url)
                                        Is Modifierfalse
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        242. Composition.section:originalRepresentation.entry.reference
                                        Definition

                                        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                        ShortLiteral reference, Relative, internal or absolute URL
                                        Comments

                                        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                        Control0..1
                                        This element is affected by the following invariants: ref-1
                                        Typestring
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        244. Composition.section:originalRepresentation.entry.type
                                        Definition

                                        The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                        The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                        ShortType the reference refers to (e.g. "Patient")
                                        Comments

                                        This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                        Control0..1
                                        BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                        (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                        Aa resource (or, for logical models, the URI of the logical model).

                                        Typeuri
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        246. Composition.section:originalRepresentation.entry.identifier
                                        Definition

                                        An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                        ShortLogical reference, when literal reference is not known
                                        Comments

                                        When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                        When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                        Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                        Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                        NoteThis is a business identifier, not a resource identifier (see discussion)
                                        Control0..1
                                        TypeIdentifier
                                        Is Modifierfalse
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        248. Composition.section:originalRepresentation.entry.display
                                        Definition

                                        Plain text narrative that identifies the resource in addition to the resource reference.

                                        ShortText alternative for the resource
                                        Comments

                                        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        250. Composition.section:originalRepresentation.emptyReason
                                        Definition

                                        If the section is empty, why the list is empty. An empty section typically has some text explaining the empty reason.

                                        ShortWhy the section is empty
                                        Comments

                                        The various reasons for an empty section make a significant interpretation to its interpretation. Note that this code is for use when the entire section content has been suppressed, and not for when individual items are omitted - implementers may consider using a text note or a flag on an entry in these cases.

                                        Control0..1
                                        This element is affected by the following invariants: cmp-2
                                        BindingThe codes SHOULD be taken from ListEmptyReasons
                                        (preferred to http://hl7.org/fhir/ValueSet/list-empty-reason)

                                        If a section is empty, why it is empty.

                                        TypeCodeableConcept
                                        Is Modifierfalse
                                        Summaryfalse
                                        Requirements

                                        Allows capturing things like "none exist" or "not asked" which can be important for most lists.

                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        252. Composition.section:originalRepresentation.section
                                        Definition

                                        A nested sub-section within this section.

                                        ShortNested Section
                                        Comments

                                        Nested sections are primarily used to help human readers navigate to particular portions of the document.

                                        Control0..0
                                        This element is affected by the following invariants: cmp-1
                                        TypeSee ttp://hl7.org/fhir/StructureDefinition/Composition#Composition.section
                                        Is Modifierfalse
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))