Cerebral infrc due to embolism of unsp post cerebral artery

This code signifies a stroke caused by a blockage in an unspecified posterior cerebral artery, where the blockage originated from an embolus (a traveling clot or other material). This results in tissue death (infarction) in the brain region supplied by that artery.

Apply this code when documentation clearly states a cerebral infarction due to an embolism affecting a posterior cerebral artery, but the specific branch (e.g., P1, P2) is not identified. This diagnosis is typically confirmed by imaging studies such as MRI or CT scans showing ischemic changes in the posterior cerebral artery territory, along with clinical signs of stroke.

• Ensure documentation specifies an embolic cause; otherwise, consider other I63 subcategories.
• If the specific posterior cerebral artery is known (e.g., right, left, or a specific segment), a more precise code from I63.43- should be used.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any associated neurological deficits.