M31 Other necrotizing vasculopathies
ICD-10-CM category M31 sits in Chapter 13 (Diseases of the musculoskeletal system and connective tissue, M00-M99). It contains 13 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
M31.1 Thrombotic microangiopathyM31.3 Wegener's granulomatosis
Billable codes in M31
| Code | Description |
|---|---|
M31.0 | Hypersensitivity angiitis |
M31.10 | Thrombotic microangiopathy, unspecified |
M31.11 | Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA] |
M31.19 | Other thrombotic microangiopathy |
M31.2 | Lethal midline granuloma |
M31.30 | Wegener's granulomatosis without renal involvement |
M31.31 | Wegener's granulomatosis with renal involvement |
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 |
Search within ICD-10-CM for M31 and related codes
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