Union of http://terminology.hl7.org/CodeSystem/expansion-parameter-source and http://terminology.hl7.org/CodeSystem/expansion-parameter-source

This is the CodeSystem that contains all the codes in ExpansionParameterSource (http://terminology.hl7.org/CodeSystem/expansion-parameter-source) and ExpansionParameterSource (http://terminology.hl7.org/CodeSystem/expansion-parameter-source). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: CodeSystem 818959f7-0f8d-4f6f-b46c-7c5a5833d862-497

This code system http://hl7.org/fhir/comparison/CodeSystem/818959f7-0f8d-4f6f-b46c-7c5a5833d862-497 defines codes, but no codes are represented here

CodeDisplayDefinition
input Client InputThe parameter was supplied by the client in the $expand request.
server Server EngineThe parameter was added by the expansion engine on the server.
codesystem Code SystemThe parameter was added from one the code systems used in the $expand operation.