The portal uses cookies to provide service functions such as “Bookmark” and to improve website usage. Information and opt-out options can be found in the cookie settings in the privacy policy.

Search

G91.9: Hydrocephalus, unspecified

Cerebrospinal fluid has accumulated in your skull.

There are cavities with cerebrospinal fluid in the brain, around the brain and around the spinal cord. Among other things, the cerebrospinal fluid cushions the brain and spinal cord during knocks and also nourishes the brain cells.

The cerebrospinal fluid is produced in the cavities in the brain. The various cavities for cerebrospinal fluid are connected to one another. So the cerebrospinal fluid is able to flow through the different cavities in the brain to the space around the brain. The cerebrospinal fluid is reabsorbed in the cavity around the brain. Normally exactly as much cerebrospinal fluid is produced as is reabsorbed.

If the cerebrospinal fluid is unable to flow unhindered from the cavities in the brain, it can accumulate there. This can occur, for example, if inflamed or changed tissue presses on the connecting passages between the brain’s cavities. A bleed can also prevent the cerebrospinal fluid from flowing away. It may also be that the cerebrospinal fluid in the cavity around the brain is not being properly reabsorbed. Causes can also include, for example, a bleed or an inflammation.

If a lot of cerebrospinal fluid collects in the skull, the pressure in the skull can increase. You may then get headaches and nausea, for example. If cerebrospinal fluid accumulates over a long period of time, other symptoms may occur. Walking may then be more difficult. You may also have problems with your memory or concentration. Your bladder may no longer be able to hold your urine.

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

Note

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.

Source

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