I65 - Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
I65.0 - Occlusion and stenosis of vertebral artery
I65.01 - Occlusion and stenosis of right vertebral artery
I65.02 - Occlusion and stenosis of left vertebral artery
I65.03 - Occlusion and stenosis of bilateral vertebral arteries
I65.09 - Occlusion and stenosis of unspecified vertebral artery