M17.3Header code — not billable
Unilateral post-traumatic osteoarthritis of knee
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M17
- Effective date
- October 1, 2026
Related codes in category M17
M17Osteoarthritis of kneeM17.0Bilateral primary osteoarthritis of kneeYesM17.1Unilateral primary osteoarthritis of kneeM17.10Unilateral primary osteoarthritis, unspecified kneeYesM17.11Unilateral primary osteoarthritis, right kneeYesM17.12Unilateral primary osteoarthritis, left kneeYesM17.2Bilateral post-traumatic osteoarthritis of kneeYesM17.30Unilateral post-traumatic osteoarthritis, unspecified kneeYesM17.31Unilateral post-traumatic osteoarthritis, right kneeYesM17.32Unilateral post-traumatic osteoarthritis, left kneeYesM17.4Other bilateral secondary osteoarthritis of kneeYesM17.5Other unilateral secondary osteoarthritis of kneeYes
Frequently asked questions
What is ICD-10 code M17.3?
M17.3 is an ICD-10-CM diagnosis code for Unilateral post-traumatic osteoarthritis of knee.
Is M17.3 a billable code?
No. M17.3 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is M17.3 in?
M17.3 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M17.3 become effective?
M17.3 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M17.3?
M17.3 belongs to category M17, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.