ICD-10 Code M05.33 – Rheumatoid heart disease with rheumatoid arthritis of wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.33 – Rheumatoid heart disease with rheumatoid arthritis of wrist
What it is
M05.33 identifies rheumatoid arthritis affecting the wrist in a patient who also has rheumatoid heart disease. You use it when both the cardiac complication and the wrist joint involvement are documented.
Clinical signs
Typical findings include chronic inflammatory wrist pain, swelling, stiffness, and reduced range of motion. Rheumatoid heart disease may be documented with cardiac involvement; clinical features vary, so refer to documentation.
When to use this code
Use this code when the record clearly links rheumatoid heart disease with rheumatoid arthritis of the wrist. It is appropriate for encounters focused on either condition if both are active and documented. If the wrist site or cardiac involvement is not specified, check documentation.
Do not use for
Do not use it for rheumatoid arthritis without wrist involvement, or for isolated heart disease without rheumatoid arthritis. Do not assign it if the documentation does not confirm both conditions.
Coding tip
Verify the anatomic site and the rheumatoid heart disease diagnosis before coding, because M05.33 requires both elements.