T78.4 - Other and unspecified allergy
- Applicable to Other and unspecified allergy
- The 2025 edition of ICD10-CM T78.4 became effective on October 1, 2024.
- This is the American ICD10-CM version of T78.4 - other international versions of ICD10 T78.4 may differ.
- T78.4 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- T78.4 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
- T78.4 - Other and unspecified allergy
- T78.4 - Other and unspecified allergy
- T78.40 - Allergy, unspecified
- T78.41 - Arthus phenomenon
- T78.49 - Other allergy
Type 1 Excludes
- 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)
Non-Billable/Non-Specific Code
The following codes above T78.4 contain annotation back-references that may be applicable to T78.4:
- Chapter: S00-T88 - Injury, poisoning and certain other consequences of external causes
- Section: T66-T78 - Other and unspecified effects of external causes
- Category: T78 - Adverse effects, not elsewhere classified
Browse other similar CM codes:
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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