ICD-10 Code M05.672 – Rheumatoid arthritis of left ankle and foot with involvement of other organs and systems (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.672 – Rheumatoid arthritis of left ankle and foot with involvement of other organs and systems
What it is
This code identifies rheumatoid arthritis affecting the left ankle and foot, with documented involvement of other organs or systems. Use it when the record shows both the joint location and systemic disease features.
Clinical signs
Typical findings include inflammatory joint pain, swelling, stiffness, and reduced motion in the left ankle or foot. Clinical features vary; refer to documentation for the extra-articular or systemic involvement.
When to use this code
Use this code when the provider documents rheumatoid arthritis in the left ankle and foot and also notes involvement of other organs or systems. The chart should support both the specific joint site and systemic manifestation.
If the record mentions rheumatoid arthritis without systemic involvement, or a different joint laterality, choose a more specific or different code. Check documentation when the site or organ involvement is unclear.
Do not use for
Do not use this code for rheumatoid arthritis limited to the joint only, or for unspecified laterality. Do not use it when the systemic involvement is not documented.
Coding tip
Verify that both the left ankle/foot and the extra-articular involvement are explicitly documented before assigning M05.672.