A84.8: Other tick-borne viral encephalitis

Your brain has become inflamed because you have been infected with specific pathogens. It is also possible that your meninges have become inflamed.

On the outside of the brain and spinal cord there are three thin meninges (linings). A tough meninx, the dura mater, is on the outside. Below that are two soft meninges.

There are various kinds of pathogens. You have been infected with viruses. The viruses are transmitted by ticks. If you are infected with the viruses, the symptoms usually occur after several days.

It is possible to have only mild symptoms or none at all with the disease. You may also have severe headaches or a fever. You will potentially feel very weak or have to vomit. Sometimes you will behave differently than usual or lack proper awareness. It may also be the case for example that you have seizures or can no longer properly feel certain parts of your body. You may be very severely ill. Particular symptoms may remain for a long time.

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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