ICD-10-CM > I00-I99 > I60-I69 > I65 > I65.2 I65.2 Occlusion and stenosis of carotid artery Non-Billable/Non-Specific Codes I65.21Occlusion and stenosis of right carotid arteryI65.22Occlusion and stenosis of left carotid arteryI65.23Occlusion and stenosis of bilateral carotid arteriesI65.29Occlusion and stenosis of unspecified carotid artery