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ICD-10 diagnosis code

T78.1 Other adverse food reactions, not elsewhere classified

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T78.1 is the ICD-10 code for Other adverse food reactions, not elsewhere classified. It is a four-character subcategory of T78 (Adverse effects, not elsewhere classified), the most specific level in the WHO edition. It belongs to the block T66–T78 (Other and unspecified effects of external causes) in Chapter XIX, Injury, poisoning and certain other consequences of external causes.

Code type
Subcategory (4 characters)
Chapter
XIX · S00–T98
Classification
WHO ICD-10, 2019 version

What T78.1 excludes

Conditions that look similar but belong under another code.

  • bacterial foodborne intoxications A05.-
  • dermatitis due to food L27.2
  • dermatitis due to food

T78.1 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

T78.1Andra ogynnsamma reaktioner mot födoämne som ej klassificeras på annan plats

NorwayICD-10-NO

T78.1Annen reaksjon på matvare ikke klassifisert annet sted

DenmarkICD-10-DK

DT781Anden fødevarereaktion IKA

  • DT781AIkke-allergisk fødevarereaktion UNS
  • DT781BAllergisk fødevarereaktion UNS
  • DT781CFødevareintolerance UNS
FinlandICD-10-FI

T78.1Muualla luokittamaton muu epäedullinen ravintoainereaktio

GermanyICD-10-GM

T78.1Sonstige Nahrungsmittelunverträglichkeit, anderenorts nicht klassifiziert

FranceICD-10-FR

T78.1Autres réactions d'intolérance alimentaire, non classées ailleurs

NetherlandsICD-10-NL

T78.1overige ongewenste reacties op voedsel, niet elders geclassificeerd

United StatesICD-10-CM

Listed through more specific codes:

  • T78.110AOther adverse food reactions due to milk and dairy products with tolerance to baked milk, initial encounter
  • T78.110DOther adverse food reactions due to milk and dairy products with tolerance to baked milk, subsequent encounter
  • T78.110SOther adverse food reactions due to milk and dairy products with tolerance to baked milk, sequela
  • T78.111AOther adverse food reaction due to milk and dairy products with reactivity to baked milk, initial encounter
  • T78.111DOther adverse food reaction due to milk and dairy products with reactivity to baked milk, subsequent encounter
  • T78.111SOther adverse food reaction due to milk and dairy products with reactivity to baked milk, sequela
  • T78.119AOther adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, initial encounter
  • T78.119DOther adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, subsequent encounter
  • and 13 more national subcodes

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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