M31
Header — not billableOther necrotizing vasculopathies
The ICD-10 code for other necrotizing vasculopathies is M31.
M31 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 10 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M31
- M31.0Hypersensitivity angiitis
- M31.1Thrombotic microangiopathynon-billable header
- M31.2Lethal midline granuloma
- M31.3Wegener's granulomatosisnon-billable header
- 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
Related codes in this category
- M30Polyarteritis nodosa and related conditionsnon-billable header
- M32Systemic lupus erythematosus (SLE)non-billable header
- M33Dermatopolymyositisnon-billable header
- M34Systemic sclerosis [scleroderma]non-billable header
- M35Other systemic involvement of connective tissuenon-billable header
- M36Systemic disorders of connective tissue in diseases classified elsewherenon-billable header
- M31Other necrotizing vasculopathiesnon-billable header