ICD-Code F51.1: Nonorganic hypersomnia

You have an increased need for sleep.

Your body recovers during sleep. In addition, sleep helps to consolidate memories and process emotions. Sleep typically follows a specific sequence. There are deep sleep phases and lighter sleep phases. These phases alternate during sleep.

An increased need for sleep may cause you to sleep longer than usual. It may also take you longer to wake up. You might also sleep during the day or feel very tired. This increased need for sleep can take a heavy toll on you.

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

The explanation of the ICD code was provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).