Release 4 5 Snapshot #1

This page is part of the FHIR Specification (v4.0.1: R4 - Mixed Normative and STU ) in it's permanent home (it will always be available at this URL). (v5.0.0-snapshot1: Release 5 Snapshot #1). The current version which supercedes this version is 5.0.0 . For a full list of available versions, see the Directory of published versions . Page versions: R4B R4

Extension: initialValue

FHIR Infrastructure Work Group   Maturity Level : 1 Informative Use Context : Any

URL for this extension: 


http://hl7.org/fhir/StructureDefinition/cqf-initialValue

Status: draft. Extension maintained by: Health Level Seven, Inc. - CDS WG

An expression that determines an initial value. The expression may be simply the name of an a expression in a referenced library that determines an initial value. library, or it may be a complete inline expression.

Context of Use: Use on Element ID Element

Extension Content

Summary

Name Flags Card. Type Description & Constraints doco
. . initialValue 0..* string Expression URL = http://hl7.org/fhir/StructureDefinition/cqf-initialValue
initialValue: An expression that determines an initial value. The expression may be simply the name of an a expression in a referenced library that determines an initial value. library, or it may be a complete inline expression.


Use on Element ID Element

doco Documentation for this format

Full Structure

Name Flags Card. Type Description & Constraints doco
. . extension 0..* Extension URL = http://hl7.org/fhir/StructureDefinition/cqf-initialValue
initialValue: An expression that determines an initial value. The expression may be simply the name of an a expression in a referenced library that determines an initial value. library, or it may be a complete inline expression.


Use on Element ID Element
. . . Slices for extension I 0..0
. . . url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-initialValue"
. . . value[x] I 1..1 string Expression Value of extension

doco Documentation for this format

XML Template 

<!-- initialValue -->doco

< xmlns="http://hl7.org/fhir"

<extension xmlns="http://hl7.org/fhir"

     url="http://hl7.org/fhir/StructureDefinition/cqf-initialValue" >
  <!-- from Element: extension -->
 <

 <valueExpression><!-- ?? 1..1 Expression Value of extension --></valueExpression>

</extension>

JSON Template 

{ // initialValue
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/cqf-initialValue", // R! 
    "

    "valueExpression" : { Expression } // C? R! Value of extension

  }

Summary

Name Flags Card. Type Description & Constraints doco
. . initialValue 0..* string Expression URL = http://hl7.org/fhir/StructureDefinition/cqf-initialValue
initialValue: An expression that determines an initial value. The expression may be simply the name of an a expression in a referenced library that determines an initial value. library, or it may be a complete inline expression.


Use on Element ID Element

doco Documentation for this format

Full Structure

Name Flags Card. Type Description & Constraints doco
. . extension 0..* Extension URL = http://hl7.org/fhir/StructureDefinition/cqf-initialValue
initialValue: An expression that determines an initial value. The expression may be simply the name of an a expression in a referenced library that determines an initial value. library, or it may be a complete inline expression.


Use on Element ID Element
. . . Slices for extension I 0..0
. . . url 1..1 uri "http://hl7.org/fhir/StructureDefinition/cqf-initialValue"
. . . value[x] I 1..1 string Expression Value of extension

doco Documentation for this format

XML Template 

<!-- initialValue -->doco

< xmlns="http://hl7.org/fhir"

<extension xmlns="http://hl7.org/fhir"

     url="http://hl7.org/fhir/StructureDefinition/cqf-initialValue" >
  <!-- from Element: extension -->
 <

 <valueExpression><!-- ?? 1..1 Expression Value of extension --></valueExpression>

</extension>

JSON Template 

{ // initialValue
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/cqf-initialValue", // R! 
    "

    "valueExpression" : { Expression } // C? R! Value of extension

  }

 

Constraints

  • ele-1 : All FHIR elements must have a @value or children (xpath: @value|f:*|h:div )
  • ext-1 : Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]) )
  • ele-1 : On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div )
  • ext-1 : On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]) )
  • ele-1 : On Extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.value[x]: @value|f:*|h:div )