M89.55
Osteolysis, thigh
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
Alongside this code 9 same parent — M89.5
M89.50 Osteolysis, unspecified site M89.51 Osteolysis, shoulder category M89.52 Osteolysis, upper arm category M89.53 Osteolysis, forearm category M89.54 Osteolysis, hand category M89.56 Osteolysis, lower leg category M89.57 Osteolysis, ankle and foot category M89.58 Osteolysis, other site M89.59 Osteolysis, multiple sites
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.