M13.861Billable
Other specified arthritis, right knee
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M13
- Effective date
- October 1, 2026
Related codes in category M13
M13Other arthritisM13.0Polyarthritis, unspecifiedYesM13.1Monoarthritis, not elsewhere classifiedM13.10Monoarthritis, not elsewhere classified, unspecified siteYesM13.11Monoarthritis, not elsewhere classified, shoulderM13.111Monoarthritis, not elsewhere classified, right shoulderYesM13.112Monoarthritis, not elsewhere classified, left shoulderYesM13.119Monoarthritis, not elsewhere classified, unsp shoulderYesM13.12Monoarthritis, not elsewhere classified, elbowM13.121Monoarthritis, not elsewhere classified, right elbowYesM13.122Monoarthritis, not elsewhere classified, left elbowYesM13.129Monoarthritis, not elsewhere classified, unspecified elbowYes
Frequently asked questions
What is ICD-10 code M13.861?
M13.861 is an ICD-10-CM diagnosis code for Other specified arthritis, right knee.
Is M13.861 a billable code?
Yes. M13.861 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is M13.861 in?
M13.861 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M13.861 become effective?
M13.861 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M13.861?
M13.861 belongs to category M13, 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.