Drug or pharmacological agents hypersensitivity

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01


Drug hypersensitivity reactions are the adverse effects of pharmaceutical formulations (including active drugs and excipients) that clinically resemble allergy. It belongs to type B adverse drug reactions, which are defined by the World Health Organization as the dose-independent, unpredictable, noxious, and unintended response to a drug taken at a dose normally used in humans. It covers many different clinical phenotypes with variable onset and severity.

code elsewhere

sections/codes in this section (4A85.0-4A85.0)

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