R40.1: Stupor

Your consciousness has become clouded.

If a person’s consciousness is disordered, they will be in an abnormal, sleep-like state. The person is then very drowsy. It may be that in this state the person is unable to say where they are or what day it is. The person can only be woken up for a short time by strong stimuli. This kind of stimulus can be a pain stimulus, for example. The body is still able to react to the pain stimulus, by moving the body part concerned.

One’s consciousness can be disordered if the brain is not functioning properly. For various reasons, the brain is no longer able to function properly. The brain may have been damaged. The brain can be damaged by injury, pathogens or other diseases, for example.

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.


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