Allergic or hypersensitivity conditions
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
Allergy is a hypersensitivity reaction initiated by proven immunologic mechanisms. Hypersensitivity is defined as conditions clinically resembling allergy that cause objectively reproducible symptoms or signs, initiated by exposure to a defined stimulus at a dose tolerated by normal subjects.
code elsewhere
sections/codes in this section (4A80-4A8Z)
- Allergic or hypersensitivity disorders involving the respiratory tract (4A80)
- Allergic or hypersensitivity disorders involving the eye (4A81)
- Allergic or hypersensitivity disorders involving skin or mucous membranes (4A82)
- Allergic or hypersensitivity disorders involving the gastrointestinal tract (4A83)
- Anaphylaxis (4A84)
- Complex allergic or hypersensitivity conditions (4A85)
- Allergic or hypersensitivity conditions of other specified type (4A8Y)
- Allergic or hypersensitivity conditions of unspecified type (4A8Z)
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