CH Core (R4)
6.0.0 - trial-use
CH Core (R4)
6.0.0 - trial-use
This page is part of the CH Core (R4) (v6.0.0: STU 6) 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
| Official URL: http://fhir.ch/ig/ch-core/StructureDefinition/ch-core-quantity-with-emed-units | Version: 6.0.0 | |||
| Active as of 2025-12-16 | Computable Name: CHCoreQuantityWithEmedUnits | |||
Copyright/Legal: CC0-1.0 |
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A quantity with defined units
Usages:
You can also check for usages in the FHIR IG Statistics
Description of Profiles, Differentials, Snapshots and how the different presentations work.
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Quantity |
C | 0..* | SimpleQuantity | A fixed quantity (no comparator) Constraints: qty-3, sqty-1 |
  value |
Σ | 1..1 | decimal | Numerical value (with implicit precision) |
| unit |
Σ | 1..1 | string | Unit representation |
| system |
ΣC | 1..1 | uri | System that defines coded unit form |
 code |
Σ | 1..1 | code | Coded form of the unit Binding: UnitCode (preferred) |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| Quantity.code | Base | preferred | UnitCode | 📦3.3.0 | CH Term v3.3 |
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| qty-3 | error | Quantity | If a code for the unit is present, the system SHALL also be present |
code.empty() or system.exists()
|
| sqty-1 | error | Quantity | The comparator is not used on a SimpleQuantity |
comparator.empty()
|
This structure is derived from SimpleQuantity
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Quantity |
SimpleQuantity | |||
| value |
1..1 | decimal | Numerical value (with implicit precision) | |
| unit |
1..1 | string | Unit representation | |
| system |
1..1 | uri | System that defines coded unit form | |
| code |
1..1 | code | Coded form of the unit Binding: UnitCode (preferred) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| Quantity.code | Base | preferred | UnitCode | 📦3.3.0 | CH Term v3.3 |
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Quantity |
C | 0..* | SimpleQuantity | A fixed quantity (no comparator) Constraints: qty-3, sqty-1 |
| id |
0..1 | string | Unique id for inter-element referencing | |
 extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| value |
Σ | 1..1 | decimal | Numerical value (with implicit precision) |
| unit |
Σ | 1..1 | string | Unit representation |
| system |
ΣC | 1..1 | uri | System that defines coded unit form |
| code |
Σ | 1..1 | code | Coded form of the unit Binding: UnitCode (preferred) |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| Quantity.code | Base | preferred | UnitCode | 📦3.3.0 | CH Term v3.3 |
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both |
extension.exists() != value.exists()
|
| qty-3 | error | Quantity | If a code for the unit is present, the system SHALL also be present |
code.empty() or system.exists()
|
| sqty-1 | error | Quantity | The comparator is not used on a SimpleQuantity |
comparator.empty()
|
This structure is derived from SimpleQuantity
Key Elements View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Quantity |
C | 0..* | SimpleQuantity | A fixed quantity (no comparator) Constraints: qty-3, sqty-1 |
| value |
Σ | 1..1 | decimal | Numerical value (with implicit precision) |
| unit |
Σ | 1..1 | string | Unit representation |
| system |
ΣC | 1..1 | uri | System that defines coded unit form |
| code |
Σ | 1..1 | code | Coded form of the unit Binding: UnitCode (preferred) |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| Quantity.code | Base | preferred | UnitCode | 📦3.3.0 | CH Term v3.3 |
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| qty-3 | error | Quantity | If a code for the unit is present, the system SHALL also be present |
code.empty() or system.exists()
|
| sqty-1 | error | Quantity | The comparator is not used on a SimpleQuantity |
comparator.empty()
|
Differential View
This structure is derived from SimpleQuantity
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Quantity |
SimpleQuantity | |||
| value |
1..1 | decimal | Numerical value (with implicit precision) | |
| unit |
1..1 | string | Unit representation | |
| system |
1..1 | uri | System that defines coded unit form | |
| code |
1..1 | code | Coded form of the unit Binding: UnitCode (preferred) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| Quantity.code | Base | preferred | UnitCode | 📦3.3.0 | CH Term v3.3 |
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Quantity |
C | 0..* | SimpleQuantity | A fixed quantity (no comparator) Constraints: qty-3, sqty-1 |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| value |
Σ | 1..1 | decimal | Numerical value (with implicit precision) |
| unit |
Σ | 1..1 | string | Unit representation |
| system |
ΣC | 1..1 | uri | System that defines coded unit form |
| code |
Σ | 1..1 | code | Coded form of the unit Binding: UnitCode (preferred) |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| Quantity.code | Base | preferred | UnitCode | 📦3.3.0 | CH Term v3.3 |
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both |
extension.exists() != value.exists()
|
| qty-3 | error | Quantity | If a code for the unit is present, the system SHALL also be present |
code.empty() or system.exists()
|
| sqty-1 | error | Quantity | The comparator is not used on a SimpleQuantity |
comparator.empty()
|
This structure is derived from SimpleQuantity
Other representations of profile: CSV, Excel, Schematron