This is the CodeSystem that contains all the codes in Codes for CGM (http://hl7.org/fhir/uv/cgm/CodeSystem/cgm) and Codes for CGM (http://hl7.org/fhir/uv/cgm/CodeSystem/cgm). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 8a0f7642-7920-4137-9108-a2df45df36dc-2
This code system http://hl7.org/fhir/comparison/CodeSystem/8a0f7642-7920-4137-9108-a2df45df36dc-2
defines codes, but no codes are represented here