M31Non-billable (header)
Other necrotizing vasculopathies
Sub-codes of M31(10)
M31 is a non-billable header. Select a sub-code to bill.
M31.0Hypersensitivity angiitis✓ BillableM31.1Thrombotic microangiopathyHeaderM31.2Lethal midline granuloma✓ BillableM31.3Wegener's granulomatosisHeaderM31.4Aortic arch syndrome [Takayasu]✓ BillableM31.5Giant cell arteritis with polymyalgia rheumatica✓ BillableM31.6Other giant cell arteritis✓ BillableM31.7Microscopic polyangiitis✓ BillableM31.8Other specified necrotizing vasculopathies✓ BillableM31.9Necrotizing vasculopathy, unspecified✓ Billable
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