This is the CodeSystem that contains all the codes in Coverage Class Codes (http://terminology.hl7.org/CodeSystem/coverage-class) and Coverage Class Codes (http://terminology.hl7.org/CodeSystem/coverage-class). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 9e51d01c-2171-44b3-bbfd-16a67ff06a3d-293
This code system http://hl7.org/fhir/comparison/CodeSystem/9e51d01c-2171-44b3-bbfd-16a67ff06a3d-293 defines codes, but no codes are represented here