M65.851: Other synovitis and tenosynovitis, right thigh
M65.851 is the billable ICD-10-CM diagnosis code for Other synovitis and tenosynovitis, right thigh. 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 M65.851?
M65.851 is the ICD-10-CM diagnosis code for Other synovitis and tenosynovitis, right thigh. It belongs to category M65 (Synovitis and tenosynovitis).
Is M65.851 a billable code?
Yes. M65.851 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 M65.851 belong to?
M65.851 is part of ICD-10-CM category M65 — Synovitis and tenosynovitis, which has 266 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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