M31
M31: Other necrotizing vasculopathies
Non-billable headerICD-10-CM
M31 is a non-billable header ICD-10-CM code for other necrotizing vasculopathies. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with M31
Their own Excludes1 notes name this code, so the conflict is not listed above.
- D68.5Primary thrombophilia
- D69Purpura and other hemorrhagic conditions
- I77.6Arteritis, unspecified
- J99Respiratory disorders in diseases classified elsewhere
- L95Vasculitis limited to skin, not elsewhere classified
- M30Polyarteritis nodosa and related conditions
- M35.3Polymyalgia rheumatica
- N08Glomerular disorders in diseases classified elsewhere
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead M31
10 child codes. Green means billable.
- M31.0Hypersensitivity angiitis
- M31.1Thrombotic microangiopathy
- M31.2Lethal midline granuloma
- M31.3Wegener's granulomatosis
- M31.4Aortic arch syndrome [Takayasu]
- M31.5Giant cell arteritis with polymyalgia rheumatica
- M31.6Other giant cell arteritis
- M31.7Microscopic polyangiitis
- M31.8Other specified necrotizing vasculopathies
- M31.9Necrotizing vasculopathy, unspecified