ICD-10 Code M05.20 – Rheumatoid vasculitis with rheumatoid arthritis of unspecified site (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.20 – Rheumatoid vasculitis with rheumatoid arthritis of unspecified site
What it is
M05.20 identifies rheumatoid arthritis complicated by rheumatoid vasculitis, with the affected site not specified. Use it when the record documents both rheumatoid arthritis and vasculitis linked to the same disease process.
Clinical signs
Clinical features vary; refer to documentation. Rheumatoid vasculitis may present with ischemic skin lesions, neuropathy, or other organ involvement in a patient with established rheumatoid arthritis.
When to use this code
Use this code when the provider clearly states rheumatoid vasculitis and rheumatoid arthritis, but does not identify a specific joint or site. It is appropriate for encounters where the vasculitis is attributed to rheumatoid disease and the site remains unspecified.
If the note only says rheumatoid arthritis without vasculitis, or vasculitis without a rheumatoid link, do not assign M05.20. Check documentation for the exact relationship and site wording.
Do not use for
Do not use this code for rheumatoid arthritis without vasculitis, or for vasculitis from another cause. If the site is specified elsewhere in the record, choose the more specific code.
Coding tip
Code M05.20 only when both conditions are documented together and the site is not specified; otherwise, query or code more specifically.