Cerebral infrc due to thrombosis of bilateral verteb art

This code signifies an ischemic stroke resulting from a blood clot obstructing both vertebral arteries. This condition leads to a sudden loss of brain function due to insufficient blood supply to the posterior circulation of the brain.

Apply this code when documentation clearly states a cerebral infarction caused by thrombosis affecting both the left and right vertebral arteries. Supporting documentation should include imaging reports (e.g., MRI, CT angiography) confirming bilateral vertebral artery occlusion and clinical findings consistent with a posterior circulation stroke.

• Ensure documentation specifies "thrombosis" as the cause, not embolism or unspecified occlusion.
• Verify that both vertebral arteries are explicitly stated as affected; unilateral involvement requires a different code.
• Sequence this code as the primary diagnosis when it is the reason for the encounter.