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/5b1132b8-51e9-46ac-8efa-9d1c907d9515-459
defines codes, but no codes are represented here