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 304f0372-0b85-4279-880e-670756f378c2-5
This code system http://hl7.org/fhir/comparison/CodeSystem/304f0372-0b85-4279-880e-670756f378c2-5 defines codes, but no codes are represented here