ICD-10 Code M05.522 – Rheumatoid polyneuropathy with rheumatoid arthritis of left elbow (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.522 – Rheumatoid polyneuropathy with rheumatoid arthritis of left elbow
What it is
This code identifies rheumatoid arthritis affecting the left elbow with associated polyneuropathy. Use it when the record shows both the joint disease and nerve involvement linked to rheumatoid arthritis.
Clinical signs
Typical findings include inflammatory elbow pain, swelling, stiffness, and reduced range of motion, plus symptoms of peripheral nerve dysfunction such as numbness, tingling, or weakness. Clinical features vary; refer to documentation.
When to use this code
Use M05.522 when the provider documents rheumatoid arthritis in the left elbow and specifically links a polyneuropathy to the rheumatoid disease. This code supports cases where the neuropathy is part of the rheumatoid condition, not a separate neurologic disorder. Check documentation if laterality or the neuropathy relationship is unclear.
Do not use for
Do not use this code for rheumatoid arthritis without documented polyneuropathy, or for neuropathy from another cause. If the affected elbow is not the left side, choose the appropriate laterality-specific code.
Coding tip
Confirm that the note explicitly connects the neuropathy to rheumatoid arthritis before assigning M05.522.