ICD-10 Code M05.372 – Rheumatoid heart disease with rheumatoid arthritis of left ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.372 – Rheumatoid heart disease with rheumatoid arthritis of left ankle and foot
What it is
M05.372 identifies rheumatoid arthritis affecting the left ankle and foot in a patient who also has rheumatoid heart disease. Use it when the record links both the joint disease and the cardiac involvement to rheumatoid arthritis.
Clinical signs
Typical findings include inflammatory pain, swelling, stiffness, and reduced motion in the left ankle or foot. Rheumatoid heart disease may be documented separately with cardiac involvement; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents rheumatoid arthritis in the left ankle and foot and states that rheumatoid heart disease is present. It is appropriate for confirmed, linked diagnoses in the same patient record. Check documentation if the laterality or cardiac association is unclear.
Do not use for
Do not use it for rheumatoid arthritis without heart disease, or for heart disease not documented as rheumatoid in origin. If the affected side is not the left ankle and foot, choose the more specific documented code.
Coding tip
Verify that both the cardiac condition and the left ankle/foot involvement are explicitly documented before assigning M05.372.