M17.12Billable
Unilateral primary osteoarthritis, left 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 kneeYesM17.2Bilateral post-traumatic osteoarthritis of kneeYesM17.3Unilateral post-traumatic osteoarthritis of kneeM17.30Unilateral 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 M17.12?
M17.12 is an ICD-10-CM diagnosis code for Unilateral primary osteoarthritis, left knee.
Is M17.12 a billable code?
Yes. M17.12 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is M17.12 in?
M17.12 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M17.12 become effective?
M17.12 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M17.12?
M17.12 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.