T78.111Other adverse food reaction due to milk and dairy products with reactivity to baked milk

T78.111 is the ICD-10-CM diagnosis code for other adverse food reaction due to milk and dairy products with reactivity to baked milk. It belongs to category T78 (adverse effects, not elsewhere classified), block T66-T78 (other and unspecified effects of external causes) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T78.11 (other adverse food reactions due to milk and dairy products), T78.111 is specifically for other adverse food reaction due to milk and dairy products with reactivity to baked milk. Related codes cover with tolerance to baked milk (T78.110) and reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified (T78.119).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Don't report T78.111 together with the conditions in its Excludes1 note: Other adverse food reaction due to milk and dairy products with tolerance to baked milk (T78.110).

It was added in FY2026, effective October 1, 2025.