ICD-10 Code M05.67 – Rheumatoid arthritis of ankle and foot with involvement of other organs and systems (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.67 – Rheumatoid arthritis of ankle and foot with involvement of other organs and systems
What it is
This code identifies rheumatoid arthritis affecting the ankle and foot, with documented involvement of other organs or systems. Use it when the record supports both the joint location and systemic rheumatoid disease.
Clinical signs
Typical findings include inflammatory pain, swelling, and stiffness in the ankle or foot, often with symmetrical joint involvement. Clinical features vary; refer to documentation for extra-articular disease such as nodules or organ involvement.
When to use this code
Use this code when the provider documents rheumatoid arthritis in the ankle or foot and also notes involvement of other organs or systems. It fits cases where the diagnosis is not limited to a single joint and systemic disease is clearly stated. Check documentation if the body-system involvement is unspecified.
Do not use for
Do not use this code for rheumatoid arthritis limited to the ankle or foot without systemic involvement. Do not use it when the chart only says arthritis, foot pain, or rheumatoid arthritis elsewhere.
Coding tip
Verify both the joint site and the extra-articular involvement in the provider note before assigning M05.67.