What ICD-10 Codes Are Used for Allergies?
Allergies are hypersensitive immune responses to substances that enter or come into contact with the body. Here are the commonly used Allergy ICD codes:
- J30.9: Allergic rhinitis, unspecified
- L20.9: Atopic dermatitis, unspecified
- T78.40XA: Allergy, unspecified, initial encounter
- Z88.9: Allergy status to unspecified drug, medicament, or biological substance
- J45.909: Unspecified asthma, uncomplicated

