ICD-10-CM > I00-I99 > I60-I69 > I63 > I63.0 > I63.03 I63.03 Cerebral infarction due to thrombosis of carotid artery Non-Billable/Non-Specific Codes I63.031Cerebral infarction due to thrombosis of right carotid arteryI63.032Cerebral infarction due to thrombosis of left carotid arteryI63.033Cerebral infarction due to thrombosis of bilateral carotid arteriesI63.039Cerebral infarction due to thrombosis of unspecified carotid artery