Table 1

 ICD codes for allergic conditions (used in admissions and GP data sets)

ConditionICD-9 codesICD-10 codes
Allergic rhinitis477 Allergic rhinitisJ30.1 Allergic rhinitis due to pollen
J30.2 Other seasonal allergic rhinitis
J30.3 Other allergic rhinitis
J30.4 allergic rhinitis, unspecified
Anaphylaxis995.0 Anaphylactic shockT78.0 Anaphylactic shock due to adverse food reaction
999.4 Anaphylactic shock due to serumT78.2 Anaphylactic shock, unspecified
T80.5 Anaphylaxis due to serum
T88.6 Anaphylactic shock due to adverse effect of correctly administered medication
Angio-oedema995.1 Angio-oedemaT78.3 Angio-oedema
Conjunctivitis372.1 Chronic conjunctivitisH10.1 Acute atopic conjunctivitis
372.3 Other and unspecified conjunctivitis
Eczema/dermatitis691 Atopic dermatitis and related conditionsL20 Atopic dermatitis
692 Contact dermatitis and other eczemaL23 Allergic contact dermatitis
Food allergy693.1 Dermatitis due to foodL27.2 Dermatitis due to food
T78.1 Other adverse reactions to food
Urticaria708 UrticariaL50 Urticaria