ICD-11 code : 4A44.A0;
Preferred Label : Microscopic polyangiitis;
ICD-11 definition : Necrotizing vasculitis, with few or no immune deposits, predominantly affecting small
vessels (i.e., capillaries, venules, or arterioles). Necrotizing arteritis involving
small and medium sized arteries may be present. Necrotizing glomerulonephritis is
very common. Pulmonary capillaritis often occurs. Granulomatous inflammation is absent.;
ICD-11 synonym : MPA;
ICD-11 inclusion : Microscopic polyarteritis;
Origin ID : 999231798;
UMLS CUI : C2347126;
Automatic exact mappings (from CISMeF team)
Currated CISMeF NLP mapping
False automatic mappings
ICD-10 Mapping
Semantic type(s)
UMLS correspondences (same concept)
Necrotizing vasculitis, with few or no immune deposits, predominantly affecting small
vessels (i.e., capillaries, venules, or arterioles). Necrotizing arteritis involving
small and medium sized arteries may be present. Necrotizing glomerulonephritis is
very common. Pulmonary capillaritis often occurs. Granulomatous inflammation is absent.