CH Core (R4)
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CH Core (R4), published by HL7 Switzerland. This guide is not an authorized publication; it is the continuous build for version 6.0.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7ch/ch-core/ and changes regularly. See the Directory of published versions

Data Type Profile: CH Core Quantity with EMED Units

Official URL: http://fhir.ch/ig/ch-core/StructureDefinition/ch-core-quantity-with-emed-units Version: 6.0.0-ci-build
Active as of 2025-09-02 Computable Name: CHCoreQuantityWithEmedUnits

Copyright/Legal: CC0-1.0

A quantity with defined units

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. 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

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Quantity.codepreferredUnitCode
http://fhir.ch/ig/ch-term/ValueSet/UnitCode

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
qty-3errorQuantityIf a code for the unit is present, the system SHALL also be present
: code.empty() or system.exists()
sqty-1errorQuantityThe comparator is not used on a SimpleQuantity
: comparator.empty()

This structure is derived from SimpleQuantity

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. 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

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
Quantity.codepreferredUnitCode
http://fhir.ch/ig/ch-term/ValueSet/UnitCode
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. 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)
... system ΣC 1..1 uri System that defines coded unit form
... code Σ 1..1 code Coded form of the unit
Binding: UnitCode (preferred)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Quantity.codepreferredUnitCode
http://fhir.ch/ig/ch-term/ValueSet/UnitCode

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
qty-3errorQuantityIf a code for the unit is present, the system SHALL also be present
: code.empty() or system.exists()
sqty-1errorQuantityThe comparator is not used on a SimpleQuantity
: comparator.empty()

This structure is derived from SimpleQuantity

Summary

Mandatory: 4 elements

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. 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

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Quantity.codepreferredUnitCode
http://fhir.ch/ig/ch-term/ValueSet/UnitCode

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
qty-3errorQuantityIf a code for the unit is present, the system SHALL also be present
: code.empty() or system.exists()
sqty-1errorQuantityThe comparator is not used on a SimpleQuantity
: comparator.empty()

Differential View

This structure is derived from SimpleQuantity

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. 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

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
Quantity.codepreferredUnitCode
http://fhir.ch/ig/ch-term/ValueSet/UnitCode

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. 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)
... system ΣC 1..1 uri System that defines coded unit form
... code Σ 1..1 code Coded form of the unit
Binding: UnitCode (preferred)

doco Documentation for this format

Terminology Bindings

PathConformanceValueSetURI
Quantity.codepreferredUnitCode
http://fhir.ch/ig/ch-term/ValueSet/UnitCode

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
qty-3errorQuantityIf a code for the unit is present, the system SHALL also be present
: code.empty() or system.exists()
sqty-1errorQuantityThe comparator is not used on a SimpleQuantity
: comparator.empty()

This structure is derived from SimpleQuantity

Summary

Mandatory: 4 elements

 

Other representations of profile: CSV, Excel, Schematron