Union of http://terminology.hl7.org/CodeSystem/characteristic-method and http://terminology.hl7.org/CodeSystem/characteristic-method

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

CodeSystem

Generated Narrative: CodeSystem 21d0d52d-6932-4516-ad29-944d62abcb69-677

This code system http://hl7.org/fhir/comparison/CodeSystem/21d0d52d-6932-4516-ad29-944d62abcb69-677 defines codes, but no codes are represented here

CodeDefinition
Default Default.