ICD-10 Code M05.371 – Rheumatoid heart disease with rheumatoid arthritis of right ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.371 – Rheumatoid heart disease with rheumatoid arthritis of right ankle and foot
What it is
This code identifies rheumatoid arthritis affecting the right ankle and foot in a patient who also has rheumatoid heart disease. Use it when the record clearly links both the joint disease and the cardiac involvement.
Clinical signs
Typical findings include chronic inflammatory joint pain, swelling, stiffness, and reduced motion in the right ankle or foot. Rheumatoid heart disease may present with documented cardiac involvement; clinical features vary, so refer to documentation.
When to use this code
Use M05.371 when the provider documents rheumatoid arthritis of the right ankle and foot together with rheumatoid heart disease. The code is appropriate for confirmed active disease, follow-up visits, or ongoing management when both conditions remain part of the assessment.
Do not assign it if the chart mentions only rheumatoid arthritis without cardiac disease, or heart disease without a rheumatoid link. Check documentation when laterality, site, or the heart involvement is unclear.
Do not use for
Do not use this code for rheumatoid arthritis in another joint, unspecified ankle/foot involvement, or non-rheumatoid cardiac disease. If the record does not support the combined diagnosis, check documentation.
Coding tip
Confirm both the rheumatoid heart disease and the right-sided ankle/foot involvement are explicitly documented before assigning M05.371.