M16.5 — Unilateral post-traumatic osteoarthritis of hip
M16.5 is a non-billable header ICD-10-CM code for unilateral post-traumatic osteoarthritis of hip. It cannot be billed on its own: choose one of the more specific child codes below.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Post-traumatic osteoarthritis of hip NOS
Other codes that can never be billed with M16.5
These codes carry an Excludes1 note pointing at M16.5. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M16.5 alone.
- M12.5Traumatic arthropathy
Risk adjustment
M16.5 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead M16.5
3 child codes. Green means billable.
Related codes at this level
Codes that share M16. If M16.5 is not quite right, the correct code is usually one of these.
- M16.0Bilateral primary osteoarthritis of hip
- M16.1Unilateral primary osteoarthritis of hip
- M16.2Bilateral osteoarthritis resulting from hip dysplasia
- M16.3Unilateral osteoarthritis resulting from hip dysplasia
- M16.4Bilateral post-traumatic osteoarthritis of hip
- M16.6Other bilateral secondary osteoarthritis of hip
- M16.7Other unilateral secondary osteoarthritis of hip
- M16.9Osteoarthritis of hip, unspecified
Questions about M16.5
- Is M16.5 a billable ICD-10-CM code?
- No. M16.5 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M16.5 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Osteoarthritis (M15-M19).