M13.861: Other specified arthritis, right knee
M13.861 is the billable ICD-10-CM diagnosis code for Other specified arthritis, right knee. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code M13.861?
M13.861 is the ICD-10-CM diagnosis code for Other specified arthritis, right knee. It belongs to category M13 (Other arthritis).
Is M13.861 a billable code?
Yes. M13.861 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does M13.861 belong to?
M13.861 is part of ICD-10-CM category M13 — Other arthritis, which has 94 billable codes.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free