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Extension: maxValueSet

URL for this extension:

http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet

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

The maximum allowable value set, for use when the binding strength is 'extensible' or 'preferred'. This value set is the value set from which additional codes can be taken from. This defines a 'required' binding over the top of the extensible binding.

Comment:

Typically, this will be an entire code system, e.g. SNOMED CT. The maximum binding needs to include all the codes in the extensible or preferred binding.

Context of Use: Use on Element ID ElementDefinition.binding

Extension Content

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Summary

Name	Flags	Card.	Type	Description & Constraints
maxValueSet		0..1	uri, canonical(ValueSet)	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet maxValueSet: The maximum allowable value set, for use when the binding strength is 'extensible' or 'preferred'. This value set is the value set from which additional codes can be taken from. This defines a 'required' binding over the top of the extensible binding. Use on Element ID ElementDefinition.binding
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet maxValueSet: The maximum allowable value set, for use when the binding strength is 'extensible' or 'preferred'. This value set is the value set from which additional codes can be taken from. This defines a 'required' binding over the top of the extensible binding. Use on Element ID ElementDefinition.binding
extension	I	0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet"
value[x]	I	1..1		Value of extension
valueUri			uri
valueCanonical			canonical(valueset.html)
Documentation for this format

XML Template

<!-- maxValueSet -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet" >
  <!-- from Element: extension -->
 <value[x]><!--  1..1 uri|canonical Value of extension --></value[x]>
</extension>

JSON Template

{ // maxValueSet
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet", // R! 
// value[x]: Value of extension. One of these 2:
    "valueUri" : "<uri>" // C? R! Value of extension
    "valueCanonical" : "<canonical>", // C? R! Value of extension
  }

Summary

Name	Flags	Card.	Type	Description & Constraints
maxValueSet		0..1	uri, canonical(ValueSet)	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet maxValueSet: The maximum allowable value set, for use when the binding strength is 'extensible' or 'preferred'. This value set is the value set from which additional codes can be taken from. This defines a 'required' binding over the top of the extensible binding. Use on Element ID ElementDefinition.binding
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet maxValueSet: The maximum allowable value set, for use when the binding strength is 'extensible' or 'preferred'. This value set is the value set from which additional codes can be taken from. This defines a 'required' binding over the top of the extensible binding. Use on Element ID ElementDefinition.binding
extension	I	0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet"
value[x]	I	1..1		Value of extension
valueUri			uri
valueCanonical			canonical(valueset.html)
Documentation for this format

XML Template

<!-- maxValueSet -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet" >
  <!-- from Element: extension -->
 <value[x]><!--  1..1 uri|canonical Value of extension --></value[x]>
</extension>

JSON Template

{ // maxValueSet
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet", // R! 
// value[x]: Value of extension. One of these 2:
    "valueUri" : "<uri>" // C? R! Value of extension
    "valueCanonical" : "<canonical>", // 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)