ICD-10 Code M05.339 – Rheumatoid heart disease with rheumatoid arthritis of unspecified wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.339 – Rheumatoid heart disease with rheumatoid arthritis of unspecified wrist
What it is
This code identifies rheumatoid heart disease occurring with rheumatoid arthritis affecting an unspecified wrist. Use it when the record links the heart involvement and the wrist arthritis to the same rheumatoid disease process.
Clinical signs
Clinical features may include documented rheumatoid cardiac involvement, such as valvular or pericardial disease, along with inflammatory wrist arthritis. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents rheumatoid heart disease and rheumatoid arthritis in an unspecified wrist in the same encounter or problem list. You should code it when the wrist side is not stated and the record clearly supports the rheumatoid connection. If the heart disease is not specified as rheumatoid, check documentation.
Do not use for
Do not use this code for nonrheumatoid heart disease, isolated wrist arthritis without cardiac involvement, or rheumatoid arthritis with a specified wrist side coded elsewhere. Check documentation.
Coding tip
Confirm that both the cardiac and wrist diagnoses are explicitly documented as rheumatoid before assigning M05.339.