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T78.1

⚠ Non-billable (Header)

Other adverse food reactions, not elsewhere classified

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

⚠️ This is a category header code — not billable. Use a more specific child code below.

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📋 Code Instructions

  • • code to identify the type of reaction, if applicable

❌ Excludes1

direct

Cannot be coded with T78.1

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

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • 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)

⚠️ Excludes2

inherited from T78

Rules from parent category T78: Adverse effects, not elsewhere classified

  • • complications of surgical and medical care NEC (T80-T88)

Child Codes (3)

T78.11Other adverse food reactions due to milk and dairy productsT78.12Other adverse food reaction due to eggsT78.19Other adverse food reactions, not elsewhere classified

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Code Information

CodeT78.1
BillableNo — Header code
ParentT78
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes13 rule(s)
Excludes27 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)