Cereb infrc due to unsp occls or stenos of bi ant cereb art

This code signifies a cerebral infarction (ischemic stroke) resulting from an obstruction or narrowing of both anterior cerebral arteries, where the specific nature of the occlusion or stenosis is not documented. It indicates brain tissue damage due to a lack of blood flow to the areas supplied by these arteries.

Use this code when documentation confirms an ischemic stroke affecting both anterior cerebral arteries, but the physician has not specified whether the cause is an embolism, thrombosis, or other specific type of occlusion/stenosis. This code is appropriate when the laterality is explicitly bilateral and the specific etiology of the blockage is unknown.

• Ensure documentation clearly states "bilateral anterior cerebral arteries" and "unspecified occlusion or stenosis."
• Avoid using this code if the specific type of occlusion (e.g., embolic, thrombotic) is documented; instead, choose a more specific code within the I63.5- category.
• Always sequence this code after any acute stroke codes (I63.-) and before codes for sequelae or associated conditions.