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

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

Structure JSON Dependencies FHIRSchema Other Versions Dependant (0)Elements Summary

Name	Flags	Card	Type	Description & Constraints
Extension		0..1		Where to find code system
extension		?..0
url		?..?
value[x] *		1..?
valueUri *		1..?	uri