FHIR Extensions Pack
5.3.0-ballot-tc1 - (September 2025 Ballot) International flag

This page is part of the FHIR Core Extensions Registry (v5.3.0-ballot-tc1: Release 5.3) based on FHIR (HL7® FHIR® Standard) v5.0.0. This version is a pre-release. The current official version is 5.2.0. For a full list of available versions, see the Directory of published versions

Extension: Alternate Codes (Experimental)

Official URL: http://hl7.org/fhir/StructureDefinition/alternate-codes Version: 5.3.0-ballot-tc1
Standards status: Draft Maturity Level: 1 Computable Name: AlternateCodes
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1600

Indicates alternate codings and/or original text for the concept represented by the code. Codings or text provided SHALL convey equivalent meaning to the meaning of the code being extended (though with potential differences in level of detail conveyed).

This is an experimental extension definition; the definition is intended for testing purposes, education or evaluation, and the definition is not anticipated to be matured to a point where it is intended for genuine usage.

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 Implementation Guide

You can also check for usages in the FHIR IG Statistics

Changes since version 5.2.0:

  • No changes

    • 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 CodeableConcept: Indicates alternate codings and/or original text for the concept represented by the code. Codings or text provided SHALL convey equivalent meaning to the meaning of the code being extended (though with potential differences in level of detail conveyed).

    Maturity: 1

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension Alternate code/original text for this code
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/alternate-codes"
    ... value[x] 1..1 CodeableConcept Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension Alternate code/original text for this code
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/alternate-codes"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type CodeableConcept: Indicates alternate codings and/or original text for the concept represented by the code. Codings or text provided SHALL convey equivalent meaning to the meaning of the code being extended (though with potential differences in level of detail conveyed).

    Maturity: 1

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension Alternate code/original text for this code
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/alternate-codes"
    ... value[x] 1..1 CodeableConcept Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..* Extension Alternate code/original text for this code
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/alternate-codes"

    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()

    R4B

    The extension is unchanged in R4B

    R4

    The extension is unchanged in R4

    R3

    The extension is unchanged in R3

    Search Parameters for this Extension

    (none found)