M25.669: Stiffness of unspecified knee, not elsewhere classified
M25.669 is the billable ICD-10-CM diagnosis code for Stiffness of unspecified knee, not elsewhere classified. 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 M25.669?
M25.669 is the ICD-10-CM diagnosis code for Stiffness of unspecified knee, not elsewhere classified. It belongs to category M25 (Other joint disorder, not elsewhere classified).
Is M25.669 a billable code?
Yes. M25.669 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 M25.669 belong to?
M25.669 is part of ICD-10-CM category M25 — Other joint disorder, not elsewhere classified, which has 450 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