This is the CodeSystem that contains all the codes in IG Parameters CDA Validation (http://hl7.org/cda/stds/core/CodeSystem/IGParametersCDAValidation) and IG Parameters CDA Validation (http://hl7.org/cda/stds/core/CodeSystem/IGParametersCDAValidation). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem a0ca8a35-249d-4c54-8a16-928fe2a72630-5
This code system http://hl7.org/fhir/comparison/CodeSystem/a0ca8a35-249d-4c54-8a16-928fe2a72630-5 defines codes, but no codes are represented here