CH-AllergyIntolerance (R4)
0.2.0 - STU 1 Ballot
CH-AllergyIntolerance (R4)
0.2.0 - STU 1 Ballot
This page is part of the CH-AllergyIntolerance (R4) (v0.2.0: STU 1) based on FHIR R4. . For a full list of available versions, see the Directory of published versions 
Definitions for the allergyintolerance-certainty extension.
| 1. Extension | |
| Definition | Statement about the degree of clinical certainty that the specific substance was the cause of the manifestation in this reaction event. |
| Control | 0..1 This element is affected by the following invariants: ele-1 |
| Comments | When certainty is missing, it means no information exists (although it could be in narrative). By contrast, the unknown code is used when there is an explicit assertion that certainty is not known, such as when a patient eats a meal and it is unknown which food caused the reaction. |
| Invariants | Defined on this element ele-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()) |
| 2. Extension.id | |
| Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. |
| Control | 0..1 |
| Type | string |
| 3. Extension.extension | |
| Definition | An Extension |
| Control | 0..0 |
| Type | Extension |
| Invariants | Defined on this element ele-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()) |
| Slicing | This element introduces a set of slices on Extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators:
|
| 4. Extension.url | |
| Definition | Source of the definition for the extension code - a logical name or a URL. |
| Control | 1..1 |
| Type | uri |
| Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. |
| Fixed Value | http://hl7.org/fhir/StructureDefinition/allergyintolerance-certainty |
| 5. Extension.value[x] | |
| Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). |
| Control | 1..1 |
| Binding | The codes SHALL be taken from AllergyIntoleranceCertainty; other codes may be used where these codes are not suitable Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event. |
| Type | CodeableConcept |
| [x] Note | See Choice of Data Types for further information about how to use [x] |
| Invariants | Defined on this element ele-1: All FHIR elements must have a @value or children (: hasValue() or (children().count() > id.count())) |