I77.82 vs M31.7
I77.82 (Antineutrophilic cytoplasmic antibody [ANCA] vasculitis) compared with M31.7 (Microscopic polyangiitis), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. I77.82 carries an Excludes2 note covering M31.7: “microscopic polyangiitis (M31.7)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| I77.82Antineutrophilic cytoplasmic antibody [ANCA] vasculitis | M31.7Microscopic polyangiitis | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Antineutrophilic cytoplasmic antibody [ANCA] vasculitis is a billable ICD-10-CM diagnosis code (I77.82). | Microscopic polyangiitis is a billable ICD-10-CM diagnosis code (M31.7). |
| Includes | ANCA associated vasculitis ANCA positive vasculitis | autoimmune disease NOS collagen (vascular) disease NOS systemic autoimmune disease systemic collagen (vascular) disease |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources