FHIR Extensions Pack
5.1.0 - 5.1.0 (April 2024) International flag

This page is part of the FHIR Core Extensions Registry (v5.1.0: Release 5.1) based on FHIR (HL7® FHIR® Standard) v5.0.0. 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

Extension: Direct reference code

Official URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode Version: 5.1.0
Standards status: Trial-use Maturity Level: 2 Responsible: HL7 International / Clinical Decision Support Computable Name: DirectReferenceCode
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1739

Indicates that the given code is directly referenced by artifact logic (e.g. as a direct-reference code in CQL). Terminology dependencies used in logic can be collected and reported, typically using the relatedArtifact element with a type of depends-on. However, direct-reference codes cannot be represented in the relatedArtifact element, so this extension provides a means to support communicating direct-reference code dependencies of knowledge artifacts. As with value set dependencies, direct-reference codes may be the terminology target of a data requirement.

Context of Use

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

  • Element ID Resource

Usage info

Usage:

Changes since version 1.0.0:

  • The resource metadata has changed (status, publisher, description)
  • The data elements list has changed
  • One or more text definitions, invariants or bindings have changed

    • 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 of type Coding: Indicates that the given code is directly referenced by artifact logic (e.g. as a direct-reference code in CQL). Terminology dependencies used in logic can be collected and reported, typically using the relatedArtifact element with a type of depends-on. However, direct-reference codes cannot be represented in the relatedArtifact element, so this extension provides a means to support communicating direct-reference code dependencies of knowledge artifacts. As with value set dependencies, direct-reference codes may be the terminology target of a data requirement.

    Maturity: 2

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension A code directly referenced by the artifact
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode"
    ... value[x] 1..1 Coding Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension A code directly referenced by the artifact
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension of type Coding: Indicates that the given code is directly referenced by artifact logic (e.g. as a direct-reference code in CQL). Terminology dependencies used in logic can be collected and reported, typically using the relatedArtifact element with a type of depends-on. However, direct-reference codes cannot be represented in the relatedArtifact element, so this extension provides a means to support communicating direct-reference code dependencies of knowledge artifacts. As with value set dependencies, direct-reference codes may be the terminology target of a data requirement.

    Maturity: 2

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension A code directly referenced by the artifact
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode"
    ... value[x] 1..1 Coding Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraintsdoco
    .. Extension 0..* Extension A code directly referenced by the artifact
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    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()

    Search Parameters for this Extension

    (none found)