ICD-10 Code M05.5 – Rheumatoid polyneuropathy with rheumatoid arthritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.5 – Rheumatoid polyneuropathy with rheumatoid arthritis
What it is
This code identifies rheumatoid arthritis complicated by polyneuropathy, meaning multiple peripheral nerves are affected. It reflects a neurologic complication occurring in the setting of rheumatoid disease.
Clinical signs
Clinical features may include symmetric numbness, tingling, burning pain, or weakness in more than one limb. Documentation should support both rheumatoid arthritis and peripheral nerve involvement; clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly links polyneuropathy to rheumatoid arthritis. It is appropriate when the provider documents rheumatoid arthritis with neuropathic findings, or when the neuropathy is identified as a complication of the rheumatoid condition. Check documentation if the relationship is not explicit.
Do not use for
Do not use this code for rheumatoid arthritis without nerve involvement, or for neuropathy from another cause. If the chart only says “neuropathy” without a rheumatoid link, code the documented condition instead.
Coding tip
Make sure the provider states the neuropathy is associated with rheumatoid arthritis before assigning M05.5.