M06.0A

HCC Category Mapping

What This Code Means

Rheumatoid arthritis without the typical blood marker affecting a joint site not covered by the other specific codes.

Coding Tips

• •Clearly document the specific anatomical site affected in the medical record
• •Use this code only when the affected site does not fit into the standard categories (shoulder, elbow, wrist, hip, knee, ankle, foot, vertebrae, or multiple sites)

Clinical Significance

Seronegative rheumatoid arthritis affecting other specified sites indicates RA involvement in joints not covered by other specific anatomical codes. This diagnosis requires careful documentation to support unusual or atypical joint involvement in chronic inflammatory arthritis.

Documentation Requirements

• ✓Confirmed rheumatoid arthritis diagnosis by qualified physician
• ✓Laboratory evidence of negative rheumatoid factor status
• ✓Specific documentation of affected joint site not elsewhere classified
• ✓Clinical evidence of inflammatory arthritis in specified location
• ✓Exclusion of more common joint sites that have specific codes
• ✓Treatment appropriate for RA with evidence of response
• ✓Rationale for why other specific codes don't apply
• ✓Assessment of functional impact of unusual joint involvement

Commonly Confused Codes