FHIR Extensions Pack
1.0.0 - Working Copy International flag

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This is not an authorized publication; it is the continuous build for version 1.0.0). 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: ValueSet Expression

Official URL: http://hl7.org/fhir/StructureDefinition/valueset-expression Version: 1.0.0
Standards status: Trial-use Maturity Level: 3 Computable Name: VSExpression
Other Identifiers: id: urn:oid:2.16.840.1.113883.4.642.5.1211

An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable.

Context of Use

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

  • Element ID ValueSet

Usage info

Usage:

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 Expression: An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable.

Maturity: 3

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..1ExtensionAn alternative computable expression of the value set content
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/valueset-expression"
... value[x] 1..1ExpressionValue of extension

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..1ExtensionAn alternative computable expression of the value set content
... id 0..1idUnique id for inter-element referencing
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/valueset-expression"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension of type Expression: An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable.

Maturity: 3

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..1ExtensionAn alternative computable expression of the value set content
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/valueset-expression"
... value[x] 1..1ExpressionValue of extension

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..1ExtensionAn alternative computable expression of the value set content
... id 0..1idUnique id for inter-element referencing
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/valueset-expression"

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)