G09: Sequelae of inflammatory diseases of central nervous system

You have symptoms that are caused by an inflammation of the central nervous system or the cerebral membranes.

The central nervous system consists of the brain and the spinal column. The brain is located inside the head. It receives, processes and stores sensory impressions. The brain controls movements and various physical functions. The spinal cord is located in the spinal column. The spinal cord is made up of nerve fibers. The brain uses the nerve fibers to exchange information with the organs, skin and muscles. 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.

Inflammations of the central nervous system or the cerebral membranes can be caused by pathogens. Pathogens are bacteria, viruses or fungi, for example.

If the central nervous system or the cerebral membranes are inflamed, there can be a variety of symptoms. The symptoms may then persist after the inflammation has gone. You may no longer be able to move certain parts of your body properly, for example. You may have seizures. Your concentration or memory may also be impaired. There may be a deterioration in your sight or hearing.

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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