I64: Stroke, not specified as haemorrhage or infarction

You are having a stroke. A stroke is when the brain tissue no longer gets enough blood. As a result, the brain tissue gets damaged.

There are different types of stroke. There may be a bleed in the brain, or not enough blood may be getting to the brain because a blood vessel is blocked. In both cases, the brain tissue can no longer be properly supplied with blood and it gets damaged. A stroke can result in problems. The problems depend on the size of the area that has been damaged on where the brain has been damaged. For example, one may no longer be able to move some muscles properly, or to speak properly.

There are different reasons why strokes occur. The blood vessel may be blocked by a blood clot from the body. Or a blood vessel can rupture. There are various risk factors that favor a stroke. These include smoking, obesity, and blood pressure that is too high.

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).