FHIR Extensions Pack
5.4.0 - May 2026 International flag

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.4.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions

Extension: Applicability Behavior

Official URL: http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior Version: 5.4.0
Standards status: Trial-use Maturity Level: 1 Responsible: HL7 International / Clinical Decision Support Computable Name: ApplicabilityBehavior
Other Identifiers: OID:2.16.840.1.113883.4.642.40.97.42.159

Determines whether child actions are evaluated independently (all) or evaluated in order with the first action that is applicable being performed (any).

This is an draft extension definition; the committee is seeking implementation feedback, and the definition or contents of the extension may change in future versions

Context of Use

This extension may be used on the following element(s)

Usage info

Usages:

  • This Extension is not used by any profiles in this Specification

You can also check for usages in the FHIR IG Statistics

Changes since version 5.3.0:

  • New Content

    • Formal Views of Extension Content

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

    This structure is derived from Extension

    Summary

    Simple Extension with the type code: Determines whether child actions are evaluated independently (all) or evaluated in order with the first action that is applicable being performed (any).

    Maturity: 1

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..1 Extension all | any
    Extension.extension 0..0 Extension
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior"
    Extension.value[x] 1..1 code Value of extension
    Binding: ActionApplicabilityBehavior (required)

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..1 Extension all | any
    Extension.id 0..1 id Unique id for inter-element referencing
    Extension.extension 0..0 Extension
    Slice: Unordered, Open by value:url

    Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior"
    Extension.value[x] 1..1 code Value of extension
    Binding: ActionApplicabilityBehavior (required)

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type code: Determines whether child actions are evaluated independently (all) or evaluated in order with the first action that is applicable being performed (any).

    Maturity: 1

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..1 Extension all | any
    Extension.extension 0..0 Extension
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior"
    Extension.value[x] 1..1 code Value of extension
    Binding: ActionApplicabilityBehavior (required)

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..1 Extension all | any
    Extension.id 0..1 id Unique id for inter-element referencing
    Extension.extension 0..0 Extension
    Slice: Unordered, Open by value:url

    Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior"
    Extension.value[x] 1..1 code Value of extension
    Binding: ActionApplicabilityBehavior (required)

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Terminology Bindings

    Path Status Usage ValueSet Version Source
    Extension.value[x] Base required Action Applicability Behavior 📦5.4.0 This IG

    Constraints

    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()

    R4B

    The extension is represented a little differently in R4B:

    • Remove the extension context RequestOrchestration.action (not for this version)
    • Remove the extension context RequestOrchestration.action.action (not for this version)
    Name Flags Card. Type Description & Constraints      Filter: doco
    Extension 0..1 Extension all | any
    Extension. extension 0 .. 0 Extension
    Extension. url 1 .. 1 uri "http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior"
    Extension. value[x] 1.. 1 code Value of extension
    Binding: ActionApplicabilityBehavior ( required )

    doco Documentation for this format

    R4

    The extension is represented a little differently in R4:

    • Remove the extension context RequestOrchestration.action (not for this version)
    • Remove the extension context RequestOrchestration.action.action (not for this version)
    Name Flags Card. Type Description & Constraints      Filter: doco
    Extension 0..1 Extension all | any
    Extension. extension 0 .. 0 Extension
    Extension. url 1 .. 1 uri "http://hl7.org/fhir/StructureDefinition/cqf-applicabilityBehavior"
    Extension. value[x] 1.. 1 code Value of extension
    Binding: ActionApplicabilityBehavior ( required )

    doco Documentation for this format

    R3

    The extension is not used in R3

    • There are no valid contexts for this extension

    Search Parameters for this Extension

    (none found)