ICD-10 Code M05.512 – Rheumatoid polyneuropathy with rheumatoid arthritis of left shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.512 – Rheumatoid polyneuropathy with rheumatoid arthritis of left shoulder
What it is
This code identifies rheumatoid arthritis affecting the left shoulder, with associated polyneuropathy. It indicates an autoimmune joint disease plus nerve involvement documented together for the same patient.
Clinical signs
Typical findings include inflammatory joint pain, stiffness, swelling, and reduced shoulder motion. Polyneuropathy may present with numbness, tingling, weakness, or sensory loss; clinical features vary, refer to documentation.
When to use this code
Use this code when the record clearly links rheumatoid arthritis to the left shoulder and also documents polyneuropathy. You should code it when the provider specifies both conditions as part of the same diagnosis set.
Do not assume neuropathy from pain alone. Confirm laterality and the rheumatoid basis in the note, and check documentation if the nerve disorder is described more generally.
Do not use for
Do not use this code for rheumatoid arthritis without nerve involvement, or for neuropathy unrelated to rheumatoid disease. Check documentation if the shoulder side is not specified.
Coding tip
Verify that the provider documents both polyneuropathy and left-shoulder rheumatoid involvement before assigning M05.512.