ICD-10-CM Codes 2026 (USA)

• M31.1	Thrombotic microangiopathy

• M31.0	Hypersensitivity angiitis
  M31.1	Thrombotic microangiopathy
  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

Created by Peter Blahut, MD