I66: Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
I66.9: Occlusion and stenosis of unspecified cerebral artery
In the brain there are various arteries that supply blood to the brain tissue. One of your arteries has narrowed or got blocked.
There are various reasons why arteries narrow or get blocked like this. For example, fats and calcium may be deposited in the blood vessel wall. The blood vessel narrows as a result. Then sometimes not enough blood can flow through any longer. Or the artery 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 an artery. These include, for example, smoking, obesity, and high blood pressure.
When an artery gets blocked or narrows, it can cause various problems. However, there may be no symptoms at all.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.