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/c9ad2e8a-05d1-4fde-9d98-460e1ab4dcf1-465 defines codes, but no codes are represented here