FHIR Tooling Extensions IG
1.1.2 - Release 1.1 International flag

This page is part of the HL7 Tools Extension IG (v1.1.2: Release - Informative) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version. For a full list of available versions, see the Directory of published versions

Extension: Json Primitive Choice Extension

Official URL: http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice Version: 1.1.2
Standards status: Informative Active as of 2026-03-24 Maturity Level: 4 Computable Name: JsonPrimitiveChoiceExt
Other Identifiers: OID:2.16.840.1.113883.4.642.40.1.42.29

Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean

Context of Use

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

Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean
... extension 0..0 Extension
... url 1..1 uri "http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice"
... value[x] 1..1 boolean Value of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean
... id 0..1 id Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice"

doco Documentation for this format

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()

Summary

Simple Extension with the type boolean: Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean

Maturity: 4

Differential ViewDifferential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean
... extension 0..0 Extension
... url 1..1 uri "http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice"
... value[x] 1..1 boolean Value of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean
... id 0..1 id Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "http://hl7.org/fhir/tools/StructureDefinition/json-primitive-choice"

doco Documentation for this format

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()

Summary

Simple Extension with the type boolean: Marks an element as a choice of types where the type is implied by the JSON type. The only valid types at string, integer, decimal, and boolean

Maturity: 4

 

Other representations of profile: CSV, Excel, Schematron