Cerebral infarction due to embolism of other cerebral artery

This code signifies an ischemic stroke caused by an embolus originating elsewhere in the body (e.g., heart, carotid artery) that travels to and obstructs an cerebral artery other than the middle, anterior, or posterior cerebral arteries. This blockage leads to tissue death (infarction) in the brain region supplied by that specific vessel.

Apply this code when documentation clearly states a cerebral infarction due to an embolic event affecting a cerebral artery not otherwise specified or explicitly identified as MCA, ACA, or PCA. The physician's notes should confirm the embolic etiology and the resulting infarction.

• Ensure the documentation specifies "embolism" as the cause, not "thrombosis," for accurate coding.
• Distinguish from I63.3x codes (thrombosis) and I63.4x codes for specific cerebral arteries (e.g., I63.41x, I63.42x, I63.43x).
• Always code any associated neurological deficits (e.g., hemiplegia, aphasia) as secondary diagnoses.