I77.82
BillableAntineutrophilic cytoplasmic antibody [ANCA] vasculitis
HCC Category Mapping
V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.175V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.307ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000RxHCCHCC 83 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000What This Code Means
This is an autoimmune disease where the body's immune system attacks blood vessels, causing inflammation and damage to multiple organs. It is identified by the presence of specific antibodies (ANCA) in the blood that target neutrophil proteins.
Coding Tips
- •Verify the specific type of ANCA vasculitis (such as granulomatosis with polyangiitis, microscopic polyangiitis, or eosinophilic granulomatosis with polyangiitis) in the documentation, as more specific codes may be available
- •Document which organs are affected (lungs, kidneys, skin, etc.) as this information may support medical necessity and justify treatment decisions
Clinical Significance
Antineutrophilic cytoplasmic antibody vasculitis is a systemic autoimmune condition causing inflammation and destruction of small blood vessels, potentially affecting kidneys, lungs, skin, and nerves. This is a serious condition requiring immunosuppressive therapy and carrying significant morbidity. It maps to multiple HCC categories across models, reflecting its multi-system impact and high clinical complexity.
Documentation Requirements
- ✓Positive antineutrophilic cytoplasmic antibody serology with pattern specification (cytoplasmic or perinuclear)
- ✓Specific antineutrophilic cytoplasmic antibody-associated diagnosis: granulomatosis with polyangiitis, microscopic polyangiitis, or eosinophilic granulomatosis with polyangiitis
- ✓Organ involvement documentation (renal, pulmonary, dermatologic, neurologic)
- ✓Biopsy results when available showing vasculitis or glomerulonephritis
- ✓Current immunosuppressive treatment regimen
- ✓Disease activity status — active flare, remission, or maintenance
- ✓Monitoring labs including renal function, urinalysis, and inflammatory markers
Excludes 2 — Not included here, may code separately
Commonly Confused Codes
M31.30-M31.31 — Granulomatosis with polyangiitis: more specific code for this antineutrophilic cytoplasmic antibody subtypeM31.7 — Microscopic polyangiitis: more specific code for this antineutrophilic cytoplasmic antibody subtypeI77.6 — Arteritis, unspecified: less specific, use I77.82 when antineutrophilic cytoplasmic antibody vasculitis is confirmedM30.0 — Polyarteritis nodosa: different vasculitis type, typically antineutrophilic cytoplasmic antibody-negativeD69.0 — Allergic purpura (immunoglobulin A vasculitis): different mechanism and antibody pattern
Code Hierarchy
└I77Other disorders of arteries and arterioles└I77.8Other specified disorders of arteries and arterioles└I77.82Antineutrophilic cytoplasmic antibody [ANCA] vasculitis
└I77.82Antineutrophilic cytoplasmic antibody [ANCA] vasculitis