ICD-10-CM 2027
ICD-10 code for dairy products allergy
Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified
From the official ICD-10-CM alphabetic index entry “Allergy, allergic (reaction) (to) › dairy products”. Page updated September 29, 2026.
About coding dairy products allergy
The ICD-10-CM code for dairy products allergy is T78.119 (Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on T78.119.
Within T78.11, choose T78.119 (reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified) only when documentation doesn't support a more specific option: with tolerance to baked milk (T78.110) and reaction due to milk and dairy products with reactivity to baked milk (T78.111).
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.
It was added in FY2026, effective October 1, 2025.
More specific dairy products allergy codes (official index)
- with
- reactivity to baked milk T78.111 — Other adverse food reaction due to milk and dairy products with reactivity to baked milk
- tolerance to baked milk T78.110 — Other adverse food reactions due to milk and dairy products with tolerance to baked milk
- anaphylactic reaction T78.079 — Anaphylactic reaction due to milk and dairy products, unspecified
- with
- reactivity to baked milk T78.071 — Anaphylactic reaction due to milk and dairy products with reactivity to baked milk
- tolerance to baked milk T78.070 — Anaphylactic reaction due to milk and dairy products with tolerance to baked milk
Common questions about dairy products allergy ICD-10 codes
What is the ICD-10 code for dairy products allergy?
- T78.119 — Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: T78.111, T78.110, T78.079, T78.071 and others below.
What is the ICD-10 code for anaphylactic reaction dairy products allergy?
- T78.079 — Anaphylactic reaction due to milk and dairy products, unspecified (header code; choose a more specific subcode).
Is T78.119 billable?
- No. T78.119 is a header code. Report one of its more specific subcodes instead.