ICD-10 Code M05.531 – Rheumatoid polyneuropathy with rheumatoid arthritis of right wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.531 – Rheumatoid polyneuropathy with rheumatoid arthritis of right wrist
What it is
This code identifies rheumatoid arthritis of the right wrist with associated polyneuropathy. It tells you the patient has inflammatory joint disease and nerve involvement documented together.
Clinical signs
Findings may include wrist pain, swelling, stiffness, and reduced motion, along with neuropathic symptoms such as numbness, tingling, or weakness. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly links rheumatoid arthritis to the right wrist and also documents polyneuropathy. It is appropriate when the provider specifies both conditions as active diagnoses. If laterality or the neuropathy relationship is unclear, check documentation.
Do not use for
Do not use this code for rheumatoid arthritis without documented polyneuropathy, or for neuropathy unrelated to rheumatoid disease. Do not assume the right wrist if the site is not stated.
Coding tip
Verify that the provider explicitly documents both rheumatoid polyneuropathy and right wrist involvement before assigning M05.531.