FHIR Extensions Pack
5.3.0-ballot-tc1 - (September 2025 Ballot) 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 5.3.0-ballot-tc1 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: Best Practice

Official URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice Version: 5.3.0-ballot-tc1
Standards status: Trial-use Maturity Level: 3 Computable Name: BestPractice
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1620

Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances.

Context of Use

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

Usage info

Usages:

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 boolean, CodeableConcept: Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances.

    Maturity: 3

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Mark a warning invariant as 'best practice'
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice"
    ... value[x] 1..1 Value of extension
    Binding: ContextOfUseValueSet (extensible)
    .... valueBoolean boolean
    .... valueCodeableConcept CodeableConcept

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Mark a warning invariant as 'best practice'
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice"
    .... valueBoolean boolean
    .... valueCodeableConcept CodeableConcept

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type boolean, CodeableConcept: Mark that an invariant represents 'best practice' rule - a rule that implementers may choose to enforce at error level in some or all circumstances.

    Maturity: 3

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Mark a warning invariant as 'best practice'
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice"
    ... value[x] 1..1 Value of extension
    Binding: ContextOfUseValueSet (extensible)
    .... valueBoolean boolean
    .... valueCodeableConcept CodeableConcept

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Mark a warning invariant as 'best practice'
    ... id 0..1 id Unique id for inter-element referencing
    ... extension 0..0
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice"
    .... valueBoolean boolean
    .... valueCodeableConcept CodeableConcept

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Terminology Bindings

    Path Status Usage ValueSet Version Source
    Extension.value[x] Base extensible Context of Use ValueSet 📦5.0.0 FHIR Std.

    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 unchanged in R4B

    R4

    The extension is unchanged in R4

    R3

    The extension is unchanged in R3

    Search Parameters for this Extension

    (none found)