This is the CodeSystem that contains codes in both RadLex radiology lexicon (http://radlex.org) and RadLex radiology lexicon (http://radlex.org).
This code system http://hl7.org/fhir/comparison/CodeSystem/8d5e97a5-7160-4288-b89a-aac9d8740552-465 defines codes, but no codes are represented here