ICD-10 Code M05.11 – Rheumatoid lung disease with rheumatoid arthritis of shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.11 – Rheumatoid lung disease with rheumatoid arthritis of shoulder
What it is
This code identifies rheumatoid arthritis affecting the shoulder together with rheumatoid lung disease. Use it when both the joint disease and pulmonary involvement are documented as part of the same rheumatoid condition.
Clinical signs
Findings may include chronic shoulder pain, stiffness, swelling, and reduced range of motion, plus documented rheumatoid lung involvement such as interstitial lung disease or pulmonary nodules. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly links rheumatoid arthritis of the shoulder with rheumatoid lung disease. It is appropriate for visits where both conditions are active or are being evaluated as manifestations of the same rheumatoid process.
Do not assign it if the shoulder arthritis is not specified as rheumatoid, or if lung disease is present without documentation tying it to rheumatoid arthritis. Check documentation for laterality and any more specific site coding.
Do not use for
Do not use this code for isolated shoulder pain, generic rheumatoid arthritis without lung involvement, or lung disease unrelated to rheumatoid arthritis. Check documentation if the site or pulmonary diagnosis is unclear.
Coding tip
Confirm that both the shoulder and lung manifestations are explicitly documented before assigning M05.11.