T78.0 — Anaphylactic reaction due to food
T78.0 is a non-billable header ICD-10-CM code for anaphylactic reaction due to food. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T78
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Anaphylactic reaction due to adverse food reaction
- Anaphylactic shock or reaction due to nonpoisonous foods
- Anaphylactoid reaction due to food
Other codes that can never be billed with T78.0
These codes carry an Excludes1 note pointing at T78.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T78.0 alone.
- R57Shock, not elsewhere classified
- T61Toxic effect of noxious substances eaten as seafood
- T62Toxic effect of other noxious substances eaten as food
- T78.070Anaphylactic reaction due to milk and dairy products with tolerance to baked milk
- T78.070AAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, initial encounter
- T78.070DAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, subsequent encounter
- T78.070SAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, sequela
- T78.071Anaphylactic reaction due to milk and dairy products with reactivity to baked milk
Risk adjustment
T78.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead T78.0
10 child codes. Green means billable.
- T78.00Anaphylactic reaction due to unspecified food
- T78.01Anaphylactic reaction due to peanuts
- T78.02Anaphylactic reaction due to shellfish (crustaceans)
- T78.03Anaphylactic reaction due to other fish
- T78.04Anaphylactic reaction due to fruits and vegetables
- T78.05Anaphylactic reaction due to tree nuts and seeds
- T78.06Anaphylactic reaction due to food additives
- T78.07Anaphylactic reaction due to milk and dairy products
- T78.08Anaphylactic reaction due to eggs
- T78.09Anaphylactic reaction due to other food products
Related codes at this level
Codes that share T78. If T78.0 is not quite right, the correct code is usually one of these.
Questions about T78.0
- Is T78.0 a billable ICD-10-CM code?
- No. T78.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T78.0 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Other and unspecified effects of external causes (T66-T78).