FHIR Extensions Pack
5.2.0-ballot - 5.2.0 Ballot - September 2024) 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 5.2.0-ballot 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: Max value set

Official URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet Version: 5.2.0-ballot
Standards status: Deprecated Maturity Level: 3 Computable Name: MaxValueSet
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1593

This acts as an overall 'required' binding for an element that already has a less restrictive binding. It is used when there is a desire to have a 'small' enumerable binding that meets most needs and where the overall value set that the codes must be drawn from is 'infinite'. The the base less restrictive binding SHALL be a proper subset of the max binding valueset. In most cases, this extension is used where the base binding is 'extensible'. DEPRECATED: Use additionalBinding extension or element instead

Context of Use

This extension is deprecated and should no longer be used

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

Usage info

Usage:

Changes since version 1.0.0:

  • The resource metadata has changed (status, description)

    • 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 uri, canonical: This acts as an overall 'required' binding for an element that already has a less restrictive binding. It is used when there is a desire to have a 'small' enumerable binding that meets most needs and where the overall value set that the codes must be drawn from is 'infinite'. The the base less restrictive binding SHALL be a proper subset of the max binding valueset. In most cases, this extension is used where the base binding is 'extensible'. DEPRECATED: Use additionalBinding extension or element instead

    Maturity: 3

     

    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 represented a little differently in R3:

    • Map the type canonical to uri on the element Extension.value[x]
    • Note: Extensions that have been modified for R3 are still draft while real-world experience is collected
    Name Flags Card. Type Description & Constraints doco
    . . Extension 0..1 Extension Maximum Value Set (when strength = extensible)
    . . . extension 0 .. 0
    . . . url 1 .. 1 uri "http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet"
    . . . value[x] 1.. 1 Value of extension
    . . . . valueUri uri
    . . . . valueUri uri

    doco Documentation for this format

    Search Parameters for this Extension

    (none found)