J09: Influenza due to identified zoonotic or pandemic influenza virus

You have a viral flu.

You have been infected with influenza viruses. Influenza viruses are transmitted via the air or skin.

Certain influenza viruses can be transmitted from an animal to a person. Other influenza viruses are transmitted person-to-person. These influenza viruses can spread very quickly in the population.

Typical symptoms of influenza are muscle aches, headaches and a high temperature.

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.


Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).