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

• Eosinophilia  (4B03)
• Hypersensitivity reactions of unspecified nature  (4B07)

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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