ICD-10 Code M05.271 – Rheumatoid vasculitis with rheumatoid arthritis of right ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.271 – Rheumatoid vasculitis with rheumatoid arthritis of right ankle and foot
What it is
This code identifies rheumatoid arthritis complicated by vasculitis, with involvement of the right ankle and foot. Use it when the record shows both rheumatoid vasculitis and rheumatoid arthritis affecting that specific site.
Clinical signs
Clinical features may include chronic inflammatory joint pain, swelling, stiffness, and signs of systemic vasculitis. Documentation may also note skin changes, neuropathic symptoms, or ischemic findings; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents rheumatoid vasculitis together with rheumatoid arthritis in the right ankle and foot. The diagnosis should clearly link the vasculitis to rheumatoid disease and specify the right-sided ankle/foot involvement.
If the record only states rheumatoid arthritis without vasculitis, or vasculitis without rheumatoid arthritis, this code is not appropriate. Check documentation for laterality and site before assigning the code.
Do not use for
Do not use this code for rheumatoid arthritis in another joint, or for unspecified ankle and foot involvement. Do not assign it when vasculitis is absent or not documented.
Coding tip
Verify both the vasculitis diagnosis and the exact right ankle/foot laterality in the provider note before coding.