M05.639: Rheumatoid arthritis of unspecified wrist with involvement of other organs and systems
M05.639 is the billable ICD-10-CM diagnosis code for Rheumatoid arthritis of unspecified wrist with involvement of other organs and systems. 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 M05.639?
M05.639 is the ICD-10-CM diagnosis code for Rheumatoid arthritis of unspecified wrist with involvement of other organs and systems. It belongs to category M05 (Rheumatoid arthritis with rheumatoid factor).
Is M05.639 a billable code?
Yes. M05.639 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 M05.639 belong to?
M05.639 is part of ICD-10-CM category M05 — Rheumatoid arthritis with rheumatoid factor, which has 422 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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