M17 — Osteoarthritis of knee
Is M17 billable?
No — M17 is a non-billable header code. M17 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 11 billable codes beneath M17.
Billable codes under this header
- M17.0Bilateral primary osteoarthritis of knee
- M17.2Bilateral post-traumatic osteoarthritis of knee
- M17.4Other bilateral secondary osteoarthritis of knee
- M17.5Other unilateral secondary osteoarthritis of knee
- M17.9Osteoarthritis of knee, unspecified
- M17.10Unilateral primary osteoarthritis, unspecified knee
- M17.11Unilateral primary osteoarthritis, right knee
- M17.12Unilateral primary osteoarthritis, left knee
- M17.30Unilateral post-traumatic osteoarthritis, unspecified knee
- M17.31Unilateral post-traumatic osteoarthritis, right knee
- M17.32Unilateral post-traumatic osteoarthritis, left knee
M17 at a glance
| Code | M17 |
|---|---|
| Description | Osteoarthritis of knee |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M17, but a patient may have both at the same time. When documentation supports it, M17 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from M15-M19
The conditions below are not part of M17, but a patient may have both at the same time. When documentation supports it, M17 and the excluded code may both be reported.
- osteoarthritis of spine (M47.-)
What codes fall under M17? (7)
- M17.0Bilateral primary osteoarthritis of knee
- M17.1Unilateral primary osteoarthritis of kneenot billable
- M17.2Bilateral post-traumatic osteoarthritis of knee
- M17.3Unilateral post-traumatic osteoarthritis of kneenot billable
- M17.4Other bilateral secondary osteoarthritis of knee
- M17.5Other unilateral secondary osteoarthritis of knee
- M17.9Osteoarthritis of knee, unspecified
How long has M17 existed?
M17 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.