M05.50
BillableRheumatoid polyneuropathy with rheumatoid arthritis of unspecified site
HCC Category Mapping
V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.175What This Code Means
Nerve damage and inflammation (polyneuropathy) caused by rheumatoid arthritis when the specific affected joint location is not documented.
Coding Tips
- •Use this code only when site of rheumatoid arthritis is unspecified or unknown
- •If specific joint involvement is documented, use more specific M05.51x codes instead
Clinical Significance
This diagnosis represents rheumatoid arthritis with polyneuropathy affecting multiple nerves when the specific joint location is unspecified. Polyneuropathy in RA indicates severe systemic disease with potential for significant neurological complications requiring specialized neurological and rheumatological management.
Documentation Requirements
- ✓Confirmed rheumatoid arthritis diagnosis with supporting clinical evidence
- ✓Documentation of polyneuropathy affecting multiple peripheral nerves
- ✓Clinical evidence of nerve damage with sensory or motor deficits
- ✓Explanation of why specific joint location cannot be determined
- ✓Neurological examination findings consistent with polyneuropathy
- ✓Exclusion of other causes of peripheral neuropathy
- ✓Treatment plan addressing both RA and neurological complications
Commonly Confused Codes
M05.5XX — Rheumatoid polyneuropathy with site-specific RA (when location is known)G62.9 — Polyneuropathy, unspecified (lacks RA component)M06.9 — Rheumatoid arthritis, unspecified (lacks polyneuropathy)E11.42 — Type 2 diabetes with diabetic polyneuropathy (different etiology)G60.9 — Hereditary and idiopathic neuropathy, unspecified (different cause)
Code Hierarchy
└M05Rheumatoid arthritis with rheumatoid factor└M05.5Rheumatoid polyneuropathy with rheumatoid arthritis└M05.50Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified site
└M05.50Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified site