World Health Organization · 2026-01 · English
4A00 Primary immunodeficiencies due to disorders of innate immunity
Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.
More specific codes
4A00.0Functional neutrophil defects4A00.1Defects in the complement system4A00.2Genetic susceptibility to particular pathogens4A00.3Immunodeficiency with natural-killer cell deficiency4A00.YOther specified primary immunodeficiencies due to disorders of innate immunity4A00.ZPrimary immunodeficiencies due to disorders of innate immunity, unspecified© World Health Organization · CC BY-ND 3.0 IGO