ICD-10-CM Diagnosis Code (2025)
Official Description for T78.4
Other and unspecified allergy
Coding Notes & Guidelines for T78.4
Excludes1: Not Coded Here
- specified types of allergic reaction such as:
- allergic diarrhea (K52.29)
- allergic gastroenteritis and colitis (K52.29)
- dermatitis (L23-L25, L27.-)
- food protein-induced enterocolitis syndrome (K52.21)
- food protein-induced enteropathy (K52.22)
- hay fever (J30.1)
Inclusion Terms
- Allergic reaction NOS
- Hypersensitivity NOS
Inclusion Terms
Arthus reaction
Parent Code (Less Specific):
About ICD-10-CM Code T78.4 (Other and unspecified allergy)
ICD-10-CM code T78.4 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T78.4 became effective on October 1, 2024.
This page provides detailed information about T78.4 - Other and unspecified allergy. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other and unspecified allergy.