T78.1

Non-billable

Other adverse food reactions, not elsewhere classified

T78.1 is the ICD-10-CM code for Other adverse food reactions, not elsewhere classified. It is a non-billable category code — use a more specific child code such as T78.11 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T78
Subcodes
3
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Excludes1 — not coded here

  • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
  • anaphylactic reaction due to food (T78.0-)
  • bacterial food borne intoxications (A05.-)

Excludes2 — not included here

  • allergic and dietetic gastroenteritis and colitis (K52.29)
  • allergic rhinitis due to food (J30.5)
  • dermatitis due to food in contact with skin (L23.6, L24.6, L25.4)
  • dermatitis due to ingested food (L27.2)
  • food protein-induced enterocolitis syndrome (K52.21)
  • food protein-induced enteropathy (K52.22)

Use additional code

  • code to identify the type of reaction, if applicable

Frequently asked questions

What is ICD-10 code T78.1?
T78.1 is the ICD-10-CM code for "Other adverse food reactions, not elsewhere classified". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T78.1 a billable code?
No — T78.1 is a non-billable header code. Use a more specific child code (such as T78.11) for billing.
What are the subcodes of T78.1?
T78.1 has 3 more specific child codes, including T78.11, T78.12, T78.19.
What is excluded from T78.1?
Excludes1 (not coded here): anaphylactic reaction or shock due to adverse food reaction (T78.0-); anaphylactic reaction due to food (T78.0-); bacterial food borne intoxications (A05.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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