M17.10 is the authoritative medical code for Unilateral primary osteoarthritis, unspecified knee. This classification is used in medical billing and clinical recording to specify the clinical criteria for unilateral primary osteoarthritis, unspecified knee (ICD-10-CM M17.10), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Unilateral primary osteoarthritis, unspecified knee is a billable ICD-10-CM diagnosis code M17.10. Excludes2 (not included here): osteoarthritis of spine M47.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M17.10 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- osteoarthritis of spine M47.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can M17.10 be reported alongside related conditions?
Per Excludes2 instructions, M17.10 and the following may both be reported when both are present: osteoarthritis of spine (M47.-).
Codes in This Family (13)
Official ICD-10-CM classifications in the same code family as M17.10, with their registry titles.
- M17 — Osteoarthritis of knee
- M17.0 — Bilateral primary osteoarthritis of knee
- M17.1 — Unilateral primary osteoarthritis of knee
- M17.11 — Unilateral primary osteoarthritis, right knee
- M17.12 — Unilateral primary osteoarthritis, left knee
- M17.2 — Bilateral post-traumatic osteoarthritis of knee
- M17.3 — Unilateral post-traumatic osteoarthritis of knee
- M17.30 — Unilateral post-traumatic osteoarthritis, unspecified knee
- M17.31 — Unilateral post-traumatic osteoarthritis, right knee
- M17.32 — Unilateral post-traumatic osteoarthritis, left knee
- M17.4 — Other bilateral secondary osteoarthritis of knee
- M17.5 — Other unilateral secondary osteoarthritis of knee
- M17.9 — Osteoarthritis of knee, unspecified
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code M18.10
Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand
ICD Code M21.10
Varus deformity, not elsewhere classified, unspecified site