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This is a frozen snapshot of the FHIR specification created for the purpose of balloting the GAO implementation Guide. It includes draft changes that may be part of the future DSTU 2.1 release but further change is expected. Readers should focus solely on the GAO implementation content, and FHIR DSTU 2 for other purposes.

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Extension: Where to find code system

URL for this extension:

http://hl7.org/fhir/StructureDefinition/valueset-systemRef

Status: draft. Extension maintained by: HL7

The formal URI for the code system. I.e. ValueSet.codeSystem.system (or its equivalent).

Context of Use: Use on element: ValueSet.compose.include

usage info: insert a list of places where this extension is used

Extension Content

• Summary
• Full Structure
• XML
• JSON
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Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	uri	URL = http://hl7.org/fhir/StructureDefinition/valueset-systemRef Where to find code system: The formal URI for the code system. I.e. ValueSet.codeSystem.system (or its equivalent). Use on element: ValueSet.compose.include
Documentation for this format

Fulle Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/valueset-systemRef Where to find code system: The formal URI for the code system. I.e. ValueSet.codeSystem.system (or its equivalent). Use on element: ValueSet.compose.include
extension		0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/valueset-systemRef"
valueUri		1..1	uri	Value of extension
Documentation for this format

XML Template

<!-- Where to find code system -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/valueset-systemRef" >
  <!-- from Element: extension -->
 <valueUri value="[uri]"/><!-- 1..1 Value of extension -->
</extension>

JSON Template

{ // Where to find code system
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/valueset-systemRef", // R! 
    "valueUri" : "<uri>" // R! Value of extension
  }

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	uri	URL = http://hl7.org/fhir/StructureDefinition/valueset-systemRef Where to find code system: The formal URI for the code system. I.e. ValueSet.codeSystem.system (or its equivalent). Use on element: ValueSet.compose.include
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/valueset-systemRef Where to find code system: The formal URI for the code system. I.e. ValueSet.codeSystem.system (or its equivalent). Use on element: ValueSet.compose.include
extension		0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/valueset-systemRef"
valueUri		1..1	uri	Value of extension
Documentation for this format

XML Template

<!-- Where to find code system -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/valueset-systemRef" >
  <!-- from Element: extension -->
 <valueUri value="[uri]"/><!-- 1..1 Value of extension -->
</extension>

JSON Template

{ // Where to find code system
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/valueset-systemRef", // R! 
    "valueUri" : "<uri>" // R! Value of extension
  }