FHIR General Extensions IG
0.1.0 - Working Copy International flag

This page is part of the FHIR Core Extensions Registry (v0.1.0: Releases Draft) based on FHIR v5.0.0. . For a full list of available versions, see the Directory of published versions

Extension: Variable

Official URL: http://hl7.org/fhir/StructureDefinition/variable Version: 0.1.0
Standards status: Trial-use Maturity Level: 1 Computable Name: Variable

Variable specifying a logic to generate a variable for use in subsequent logic. The name of the variable will be added to FHIRPath’s context when processing descendants of the element that contains this extension as well as extensions within the same element.

Context of Use

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

  • Element ID Questionnaire
  • Element ID Questionnaire.item
  • Element ID Questionnaire.item.item
  • Element ID PlanDefinition
  • Element ID PlanDefinition.action
  • Element ID PlanDefinition.action.action
  • Element ID RequestOrchestration
  • Element ID RequestOrchestration.action
  • Element ID RequestOrchestration.action.action
  • Element ID ActivityDefinition
  • Element ID Measure
  • Element ID Measure.group
  • Element ID Measure.group.population

Usage info

Usage:

  • This Extension is not used by any profiles in this Implementation Guide

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

Mandatory: 1 element
Fixed Value: 1 element
Prohibited: 1 element

Maturity: 1

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension C0..*ExtensionVariable for processing
var-1: Variable expressions must have a name
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/variable"
... value[x] 1..1ExpressionValue of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension C0..*ExtensionVariable for processing
var-1: Variable expressions must have a name
... id 0..1idUnique id for inter-element referencing
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/variable"

doco Documentation for this format

This structure is derived from Extension

Summary

Mandatory: 1 element
Fixed Value: 1 element
Prohibited: 1 element

Maturity: 1

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension C0..*ExtensionVariable for processing
var-1: Variable expressions must have a name
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/variable"
... value[x] 1..1ExpressionValue of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension C0..*ExtensionVariable for processing
var-1: Variable expressions must have a name
... id 0..1idUnique id for inter-element referencing
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/variable"

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())

Search Parameters for this Extension

(none found)

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