M06.80

Billable

Other specified rheumatoid arthritis, unspecified site

HCC Category Mapping

V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.175

V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.307

ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.000

RxHCCHCC 83 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.000

What This Code Means

A form of rheumatoid arthritis with unusual or atypical features that does not fit standard RA classifications, affecting an unspecified body location.

Coding Tips

•Use this code when documentation indicates rheumatoid arthritis with non-standard presentations but the specific site is not identified
•Query the provider for site specification when possible, as more specific codes (M06.81-M06.89) provide better clinical detail

Clinical Significance

Other specified rheumatoid arthritis at unspecified site indicates atypical or variant forms of RA that don't fit standard classifications but still represent serious inflammatory joint disease. These cases often require specialized evaluation and may have unpredictable treatment responses.

Documentation Requirements

✓Confirmed rheumatoid arthritis diagnosis meeting clinical criteria
✓Documentation of atypical features that distinguish from standard RA
✓Specific characteristics that make this 'other specified' type
✓Laboratory findings supporting rheumatoid disease process
✓Clinical presentation details that differ from typical RA patterns
✓Treatment response patterns and management challenges
✓Consultation with rheumatology specialists when available
✓Exclusion of other inflammatory arthropathies

Commonly Confused Codes

M06.9 — Rheumatoid arthritis, unspecified (when specific atypical features documented)M05.9 — Rheumatoid arthritis with rheumatoid factor, unspecified (when RF status known)M06.4 — Inflammatory polyarthropathy (when meets RA criteria)M06.8X — Other specified rheumatoid arthritis, specific sites (when location documented)M79.3 — Panniculitis, unspecified (non-articular inflammatory condition)