4A44.A1

ICD-11 MMS 2026-01

Granulomatosis with polyangiitis

Description

Necrotizing granulomatous inflammation usually involving the upper and lower respiratory tract, and necrotizing vasculitis affecting predominantly small to medium-sized vessels (e.g., capillaries, venules, arterioles, arteries and veins). Necrotizing glomerulonephritis is common.

Index terms

  • Granulomatosis with polyangiitis
  • Wegener granulomatosis
  • Necrotising respiratory granulomatosis

Inclusions

  • Wegener granulomatosis

Exclusions from above levels

  • 02 – Neoplasms
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 20 – Developmental anomalies

Sibling codes

  • 4A44.A0 – Microscopic polyangiitis
  • 4A44.A2 – Eosinophilic granulomatosis with polyangiitis
  • 4A44.AY – Other specified antineutrophil cytoplasmic antibody-associated vasculitis
  • 4A44.AZ – Antineutrophil cytoplasmic antibody-associated vasculitis, unspecified

Foundation entity

Granulomatosis with polyangiitis – http://id.who.int/icd/entity/1020056159

Part of: 4A44.A: Antineutrophil cytoplasmic antibody-associated vasculitis › 4A44: Vasculitis › 04: Diseases of the immune system