M12.5Traumatic arthropathy

M12.5 is the ICD-10-CM diagnosis code for traumatic arthropathy. It belongs to category M12 (other and unspecified arthropathy), block M05-M14 (inflammatory polyarthropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

Within M12 (other and unspecified arthropathy), M12.5 is specifically for traumatic arthropathy. Related codes cover chronic postrheumatic arthropathy [Jaccoud] (M12.0), Kaschin-Beck disease (M12.1), Villonodular synovitis (pigmented) (M12.2), Palindromic rheumatism (M12.3), intermittent hydrarthrosis (M12.4), other specific arthropathies, not elsewhere classified (M12.8) and arthropathy, unspecified (M12.9).

To report this condition, pick the subcode that matches the documentation: M12.50 (unspecified site), M12.51 (shoulder), M12.52 (elbow), M12.53 (wrist), M12.54 (hand), M12.55 (hip), M12.56 (knee), M12.57 (ankle and foot) and 2 more.

Don't report M12.5 together with the conditions in its Excludes1 note: current injury-see Alphabetic Index, post-traumatic osteoarthritis of first carpometacarpal joint (M18.2-M18.3), post-traumatic osteoarthritis of hip (M16.4-M16.5), post-traumatic osteoarthritis of knee (M17.2-M17.3) and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.