Cerebral infarction due to thrombosis of unsp carotid artery

This code signifies a stroke resulting from a blood clot forming within an unspecified carotid artery, leading to a lack of blood flow to a part of the brain. It specifically identifies an ischemic stroke caused by thrombosis, without specifying whether the left or right carotid artery was affected.

Apply this code when documentation clearly states a cerebral infarction due to thrombosis of a carotid artery, but the laterality (left or right) of the affected artery is not specified. This is appropriate for initial encounters, subsequent care, or sequelae where the specific carotid artery is not identified.

• Ensure the documentation explicitly states "thrombosis" as the cause of the infarction, not embolism or unspecified occlusion.
• Avoid using this code if the medical record specifies either the right (I63.011) or left (I63.012) carotid artery; always strive for the highest level of specificity.
• This code is for the acute event; for sequelae of cerebral infarction, a different code from category I69 should be considered.