I65 - Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
I65.2 - Occlusion and stenosis of carotid artery
I65.21 - Occlusion and stenosis of right carotid artery
I65.22 - Occlusion and stenosis of left carotid artery
I65.23 - Occlusion and stenosis of bilateral carotid arteries
I65.29 - Occlusion and stenosis of unspecified carotid artery