T78.1: Other adverse food reactions, not elsewhere classified

You are experiencing discomfort when you eat certain foods.

There are various reasons why a food is intolerable. For example, you may have an allergic reaction to the food. In the case of an allergy, the immune system reacts too strongly to normally harmless substances from the environment. If you come into contact with the triggering substance you can get a runny nose, itching or shortness of breath, for example. You may get heart palpitations or the skin on your face might suddenly get red and warm. There may also be other symptoms when one is intolerant to a food.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information


This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.


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