I63.9: Cerebral infarction, unspecified

One of the blood vessels supplying blood to your brain has got blocked. Brain tissue has been damaged as a result. This is also known as a stroke.

Various blood vessels in the neck and brain supply blood to the brain. In your case, not enough blood was getting through certain blood vessels in your brain. As a result, the brain tissue has not received enough blood.

There are various reasons why a blood vessel gets blocked. The blood vessel can be narrowed by deposits. The blood vessel may also get inflamed, or the wall of the blood vessel may change. Then not enough blood can flow through. Or the blood vessel can be blocked by a blood clot. The blood clot can form in the heart or somewhere else in the body. The blood clot can then be swept towards the brain along with the blood.

Various risk factors can favor the blocking of a blood vessel. These include, for example, smoking, obesity, and high blood pressure.

If insufficient blood is flowing through the blood vessels in the brain, the brain can get damaged. A blood vessel blockage is a type of stroke. The stroke can cause various symptoms. For example, you may no longer be able to move some muscles properly, or to speak properly. It depends on where the brain has been damaged.

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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