http://hl7.org/fhir/StructureDefinition/valueset-reference|4.0.1

A logical reference (e.g. a reference to ValueSet.url) that identifies the value set/version that identifies the set of possible coded values this coding was chosen from or constrained by.
NameFlagsCardTypeDescription & Constraints
Extension
0..1Url of Value set the code was chosen from
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueUri *
1..?uri