ICD-11 classes
04 Diseases of the immune system
Allergic or hypersensitivity conditions

ICD-11 Allergic or hypersensitivity conditions

Allergy is a hypersensitivity reaction initiated by a 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.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis contains 9 clarifying diagnoses:

1. 4A80 — Allergic or hypersensitivity disorders involving the respiratory tract
   It contains 10 clarifying diagnoses.
2. 4A81 — Allergic or hypersensitivity disorders involving the eye
   It contains 5 clarifying diagnoses.
3. 4A82 — Allergic or hypersensitivity disorders involving skin or mucous membranes
   It contains 7 clarifying diagnoses.
4. 4A83 — Allergic or hypersensitivity disorders involving the gastrointestinal tract
   It contains 8 clarifying diagnoses.
5. 4A84 — Anaphylaxis
   It contains 9 clarifying diagnoses.
6. 4A85 — Complex allergic or hypersensitivity conditions
   It contains 6 clarifying diagnoses.
7. 4B03 — Eosinophilia
   It contains 3 clarifying diagnoses.
8. 4A8Y — Allergic or hypersensitivity conditions of other specified type
9. 4A8Z — Allergic or hypersensitivity conditions of unspecified type