This is the CodeSystem that contains all the codes in Procedure Type Codes (http://terminology.hl7.org/CodeSystem/procedure-type) and Procedure Type Codes (http://terminology.hl7.org/CodeSystem/procedure-type). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 974a4042-5ef9-4d87-bcaa-92de671fa085-671
This code system http://hl7.org/fhir/comparison/CodeSystem/974a4042-5ef9-4d87-bcaa-92de671fa085-671 defines codes, but no codes are represented here