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
Generated Narrative: CodeSystem 83f9c334-408b-426f-aa51-2c674a5c7b60-422
This code system http://hl7.org/fhir/comparison/CodeSystem/83f9c334-408b-426f-aa51-2c674a5c7b60-422 defines codes, but no codes are represented here