ICD-10 Code M05.51 – Rheumatoid polyneuropathy with rheumatoid arthritis of shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.51 – Rheumatoid polyneuropathy with rheumatoid arthritis of shoulder
What it is
This code identifies rheumatoid arthritis of the shoulder with associated polyneuropathy. Use it when the record links both the inflammatory joint disease and nerve involvement to the same rheumatoid condition.
Clinical signs
Findings may include shoulder pain, stiffness, swelling, and reduced range of motion, along with distal numbness, tingling, weakness, or sensory loss. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents rheumatoid arthritis affecting the shoulder and also documents polyneuropathy as part of the rheumatoid disease process. You should code it only when the relationship is explicit or clearly supported in the note.
If the neuropathy is unrelated, or the shoulder involvement is from another cause, do not assign this code. Check documentation for laterality, site specificity, and any additional rheumatoid manifestations.
Do not use for
Do not use this code for isolated shoulder arthritis without neuropathy, or for neuropathy without rheumatoid arthritis. Check documentation if the cause of nerve symptoms is uncertain.
Coding tip
Verify that the provider connects the neuropathy to rheumatoid arthritis and specifies the shoulder involvement before assigning M05.51.