ICD-10 Code M05.131 – Rheumatoid lung disease with rheumatoid arthritis of right wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.131 – Rheumatoid lung disease with rheumatoid arthritis of right wrist
What it is
This code identifies rheumatoid arthritis affecting the right wrist, with associated rheumatoid lung disease. Use it when both the joint disease and the pulmonary manifestation are documented together.
Clinical signs
Documentation may show chronic inflammatory wrist pain, swelling, stiffness, or deformity, along with lung involvement such as interstitial or pleural disease. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider clearly links rheumatoid lung disease to rheumatoid arthritis and specifies the right wrist as the affected joint. It is appropriate for confirmed encounters, problem lists, or discharge diagnoses that document both conditions. If the lung manifestation or laterality is not stated, check documentation.
Do not use for
Do not use this code if rheumatoid lung disease is absent or if the wrist laterality is not right. Do not assign it for unspecified rheumatoid arthritis or for unrelated pulmonary disease.
Coding tip
Verify both the pulmonary manifestation and the right-sided wrist involvement before assigning M05.131.