M16.5
Unilateral post-traumatic osteoarthritis of hip
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 10 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 3
M16.5code
Inclusion terms
- Post-traumatic osteoarthritis of hip NOS
M00-M25block
Includes
- Disorders affecting predominantly peripheral (limb) joints
M00-M99chapter
Notes
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here 1
Alongside this code 8 same parent — M16
M16.0 Bilateral primary osteoarthritis of hip M16.1 Unilateral primary osteoarthritis of hip category M16.2 Bilateral osteoarthritis resulting from hip dysplasia M16.3 Unilateral osteoarthritis resulting from hip dysplasia category M16.4 Bilateral post-traumatic osteoarthritis of hip M16.6 Other bilateral secondary osteoarthritis of hip M16.7 Other unilateral secondary osteoarthritis of hip M16.9 Osteoarthritis of hip, unspecified
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.