ICD-10 Code M05.31 – Rheumatoid heart disease with rheumatoid arthritis of shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.31 – Rheumatoid heart disease with rheumatoid arthritis of shoulder
What it is
This code identifies rheumatoid arthritis affecting the shoulder together with rheumatoid heart disease. Use it when both conditions are documented as part of the same patient record.
Clinical signs
Typical findings include shoulder pain, stiffness, swelling, and reduced range of motion from rheumatoid arthritis. Rheumatoid heart disease may be documented by prior cardiac involvement; clinical features vary; refer to documentation.
When to use this code
Use M05.31 when the provider documents rheumatoid arthritis of the shoulder and rheumatoid heart disease together. It may appear in specialty notes, problem lists, or discharge summaries that clearly link both diagnoses.
If the shoulder involvement is not specified, or the heart disease is not documented as rheumatoid, check documentation before coding. Do not assume the site or cardiac relationship from nonspecific rheumatoid arthritis terms.
Do not use for
Do not use this code for rheumatoid arthritis without shoulder involvement, or for shoulder pain from another cause. Check documentation if the heart condition is unrelated or not confirmed as rheumatoid.
Coding tip
Verify both the joint site and the cardiac manifestation are explicitly documented before assigning M05.31.