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/2023f8dc-2ca7-4cc8-b1b8-b801585b8ec6-465 defines codes, but no codes are represented here