B33.4: Hantavirus (cardio-)pulmonary syndrome [HPS] [HCPS]

Your lungs are inflamed because you have been infected by certain viruses.

You need lungs to breath. When we breathe in, oxygen enters the lungs and accumulates in the blood. This blood then flows to the heart. The heart then pumps the oxygen-rich blood throughout the body. All of the organs are supplied with oxygen as a result.

There are various kinds of viruses. You have been infected with the hantavirus. This virus originates in North and South America, in particular. It is transmitted by mouse and rat bites or feces, for example.

When you first fall ill, you usually have a high temperature and muscle pains. You sometimes feel nauseous and have a cough. Your lungs may become inflamed or fluid may collect in them. Then you will have breathing problems. If the virus damages your lungs you will usually become seriously ill. The virus also sometimes damages the heart or kidneys.

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).