ICD-10-CM M31: Other necrotizing vasculopathies

ICD-10-CM Diagnosis Code (2025)

Official Description for M31

Other necrotizing vasculopathies

Coding Notes & Guidelines for M31

Excludes1: Not Coded Here

polyarteritis nodosa (M30.0)

Code First
  • if applicable:
  • complications of bone marrow transplant (T86.0-)
  • complications of stem cell transplant (T86.5)
Use Additional Code
  • code to identify specific organ dysfunction, such as:
  • acute kidney failure (N17.-)
  • acute respiratory distress syndrome (J80)
  • capillary leak syndrome (I78.8)
  • diffuse alveolar hemorrhage (R04.89)
  • encephalopathy (metabolic) (septic) (G93.41)
  • fluid overload, unspecified (E87.70)
  • graft versus host disease (D89.81-)
  • hemolytic uremic syndrome (D59.3-)
  • hepatic failure (K72.-)
  • hepatic veno-occlusive disease (K76.5)
  • idiopathic interstitial pneumonia (J84.11-)
  • sinusoidal obstruction syndrome (K76.5)
Inclusion Terms

Goodpasture's syndrome

Inclusion Terms

Transplant-associated thrombotic microangiopathy [TA-TMA]

Inclusion Terms

Thrombotic thrombocytopenic purpura

Inclusion Terms
  • Granulomatosis with polyangiitis
  • Necrotizing respiratory granulomatosis
Inclusion Terms

Wegener's granulomatosis NOS

Inclusion Terms

Microscopic polyarteritis

Inclusion Terms
  • Hypocomplementemic vasculitis
  • Septic vasculitis

Child Codes (More Specific Codes for M31):

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 M31.3 - Wegener's granulomatosis 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

About ICD-10-CM Code M31 (Other necrotizing vasculopathies)

ICD-10-CM code M31 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M31 became effective on October 1, 2024.

This page provides detailed information about M31 - Other necrotizing vasculopathies. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other necrotizing vasculopathies.