M89.5Osteolysis

M89.5 is the ICD-10-CM diagnosis code for osteolysis. It belongs to category M89 (other disorders of bone), block M86-M90 (other osteopathies) 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 M89 (other disorders of bone), M89.5 is specifically for osteolysis. Related codes cover Algoneurodystrophy (M89.0), physeal arrest (M89.1), development and growth (M89.2), hypertrophy of bone (M89.3), other hypertrophic osteoarthropathy (M89.4), osteopathy after poliomyelitis (M89.6), major osseous defect (M89.7), other specified disorders of bone (M89.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: M89.50 (unspecified site), M89.51 (shoulder), M89.52 (upper arm), M89.53 (forearm), M89.54 (hand), M89.55 (thigh), M89.56 (lower leg), M89.57 (ankle and foot) and 2 more.

The conditions in its Excludes2 note aren't part of M89.5, but may be coded alongside it if the patient has both: periprosthetic osteolysis of internal prosthetic joint (T84.05-).

Use an additional code to identify major osseous defect, if applicable (M89.7-).

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