T78.1
Header — not billableOther adverse food reactions, not elsewhere classified
The ICD-10 code for other adverse food reactions, not elsewhere classified is T78.1.
T78.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
Use additional code
This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.
- code to identify the type of reaction, if applicable
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- T78.0Anaphylactic reaction due to foodnon-billable header
- T78.2Anaphylactic shock, unspecified
- T78.3Angioneurotic edema
- T78.4Other and unspecified allergynon-billable header
- T78.8Other adverse effects, not elsewhere classified
- T78.1Other adverse food reactions, not elsewhere classifiednon-billable header