ICD-10 Code M05.231 – Rheumatoid vasculitis with rheumatoid arthritis of right wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.231 – Rheumatoid vasculitis with rheumatoid arthritis of right wrist
What it is
This code identifies rheumatoid vasculitis occurring with rheumatoid arthritis in the right wrist. Use it when the record links inflammatory vascular disease to rheumatoid arthritis at that specific joint.
Clinical signs
Clinical features may include long-standing rheumatoid arthritis with evidence of vasculitis affecting small or medium vessels. Findings can include skin lesions, neuropathic symptoms, or ischemic changes; check documentation for the right wrist involvement.
When to use this code
Use this code when the provider documents rheumatoid vasculitis and specifically names the right wrist as the affected site. It is appropriate when the wrist finding is part of rheumatoid arthritis, not a separate traumatic or degenerative condition.
If the note only says rheumatoid arthritis without vasculitis, use the rheumatoid arthritis code instead. If the affected side or joint is unclear, check documentation before coding.
Do not use for
Do not use it for vasculitis unrelated to rheumatoid arthritis or for wrist pain without documented rheumatoid involvement. Do not assign it when the record does not specify the right wrist.
Coding tip
Confirm both the vasculitis diagnosis and the laterality of the wrist in the provider note before selecting M05.231.