ICD-10-CM category
M31: Other necrotizing vasculopathies
Codes under M31 (Other necrotizing vasculopathies). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| M31.0 | Hypersensitivity angiitis | ✓ |
| M31.1 | Thrombotic microangiopathy | — |
| M31.2 | Lethal midline granuloma | ✓ |
| M31.3 | Wegener's granulomatosis | — |
| M31.4 | Aortic arch syndrome [Takayasu] | ✓ |
| M31.5 | Giant cell arteritis with polymyalgia rheumatica | ✓ |
| M31.6 | Other giant cell arteritis | ✓ |
| M31.7 | Microscopic polyangiitis | ✓ |
| M31.8 | Other specified necrotizing vasculopathies | ✓ |
| M31.9 | Necrotizing vasculopathy, unspecified | ✓ |
| M31.10 | Thrombotic microangiopathy, unspecified | ✓ |
| M31.11 | Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA] | ✓ |
| M31.19 | Other thrombotic microangiopathy | ✓ |
| M31.30 | Wegener's granulomatosis without renal involvement | ✓ |
| M31.31 | Wegener's granulomatosis with renal involvement | ✓ |
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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