Union of http://hl7.org/fhir/StructureDefinition/valueset-reference and http://hl7.org/fhir/StructureDefinition/valueset-reference

This is the set of resources that conform to either of the profiles ValueSet Reference (http://hl7.org/fhir/StructureDefinition/valueset-reference) and ValueSet Reference (http://hl7.org/fhir/StructureDefinition/valueset-reference). E.g. what you have to deal with if you get resources conforming to one of them

Structure

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1Url of Value set the code was chosen from
... url 1..1uriidentifies the meaning of the extension
... value[x] 1..1uriValue of extension

doco Documentation for this format