Cereb infrc due to unsp occls or stenos of unsp precerb art

This code signifies a cerebral infarction (ischemic stroke) caused by a blockage or narrowing in one of the major arteries supplying blood to the brain, where the specific artery and the nature of the occlusion/stenosis are not documented. It indicates brain tissue death due to a lack of blood flow from an unidentifiable precerebral arterial issue.

Use this code when a patient presents with an acute ischemic stroke and the medical record clearly states the infarction is due to an unspecified occlusion or stenosis of an unspecified precerebral artery. This is appropriate when the physician's documentation lacks specificity regarding the affected vessel (e.g., carotid, vertebral) or the precise type of blockage.

• Avoid this code if the specific precerebral artery (e.g., carotid, vertebral) is identified in the documentation, even if the type of occlusion is unspecified.
• Always sequence this code after any associated symptoms or sequelae of the stroke, if applicable.
• Ensure the documentation explicitly states "unspecified" for both the occlusion/stenosis and the precerebral artery to justify using this code.