G47.32: Sleep-related hypoventilation

You get too little air when you sleep.

There are different reasons why we sleep. The reasons have not been fully understood. So far we know, for example, that sleep helps the body to recover. Sleep also develops the memory, and it brings feelings into equilibrium. Sleep has a particular sequence. There are deep sleep phases and lighter sleep phases. These phases alternate during sleep. The sleep-wake cycle is controlled by different influences such as messenger substances in the body. These messenger substances can be influenced by activity and light.

In the brain there is a specific area that controls the respiratory drive. Your respiratory drive sometimes pauses. As a result, you get too little air when you sleep. It can be congenital, which means you were born with it. Sometimes no reason can be found for breathing interruptions while sleeping.

When someone gets too little air, the blood’s oxygen content falls. The brain then gets too little oxygen. The person then wakes up briefly and then falls asleep again. They do not usually notice this waking. However, their sleep is interrupted. With this condition, this happens frequently during the night. This makes their sleep less restful.

As a result, you may have various symptoms. They may be very tired during the day, or find it hard to concentrate. Sleep problems can contribute to various disorders.

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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