M05.20

Billable

Rheumatoid vasculitis with rheumatoid arthritis of 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 condition where blood vessel inflammation occurs as a complication of rheumatoid arthritis affecting an unspecified joint location.

Coding Tips

•Use this code when vasculitis is present but the specific joint site is not documented
•Query provider to determine if a specific joint site can be identified for more precise coding

Clinical Significance

This diagnosis represents severe rheumatoid arthritis with vasculitis complications affecting an unspecified joint site, indicating advanced systemic disease with vascular involvement. Rheumatoid vasculitis is a serious extra-articular manifestation that significantly increases morbidity and mortality risk, requiring intensive immunosuppressive therapy.

Documentation Requirements

✓Confirmed rheumatoid arthritis with appropriate laboratory findings
✓Documentation of vasculitis related to rheumatoid arthritis
✓Evidence of joint involvement with inflammatory changes
✓Clinical assessment establishing rheumatoid etiology for vasculitis
✓Vascular imaging or biopsy confirming vasculitic changes
✓Assessment of systemic manifestations and disease activity
✓Treatment plan addressing both articular and vascular complications

Commonly Confused Codes

M05.10 — Rheumatoid lung disease with RA of unspecified site (different organ system)M31.9 — Necrotizing vasculopathy, unspecified (not specifically rheumatoid)M06.9 — Rheumatoid arthritis, unspecified (lacks vasculitis component)M05.30 — Rheumatoid heart disease with RA of unspecified site (different organ involvement)I77.9 — Disorder of arteries and arterioles, unspecified (lacks RA connection)

Code Hierarchy

└M05Rheumatoid arthritis with rheumatoid factor └M05.2Rheumatoid vasculitis with rheumatoid arthritis └M05.20Rheumatoid vasculitis with rheumatoid arthritis of unspecified site

└M05.20Rheumatoid vasculitis with rheumatoid arthritis of unspecified site