Cereb infrc due to unsp occls or stenos of left cereblr art

This code signifies a stroke resulting from a blockage or narrowing of an unspecified nature within the left cerebellar artery. This leads to tissue death (infarction) in the left cerebellum, impacting coordination, balance, and motor control.

Apply this code when documentation confirms a cerebral infarction specifically affecting the left cerebellum, and the cause is attributed to an occlusion or stenosis of the left cerebellar artery, but the specific type of occlusion/stenosis (e.g., thrombotic, embolic) is not documented. This code is appropriate when imaging (e.g., MRI, CT) and clinical findings support the diagnosis of an ischemic stroke in this specific vascular territory.

• Ensure the documentation explicitly states "left cerebellar artery" and "unspecified occlusion or stenosis."
• Do not use this code if the type of occlusion (e.g., thrombosis, embolism) is specified; instead, use a more specific I63.x code.
• Sequence this code as the principal diagnosis if it is the primary reason for the encounter, followed by any associated neurological deficits.