433 Occlusion and stenosis of precerebral arteries 
433.0 Occlusion and stenosis of basilar artery 
433.00 Occlusion and stenosis of basilar artery without cerebral infarction convert 433.00 to ICD-10-CM
433.01 Occlusion and stenosis of basilar artery with cerebral infarction convert 433.01 to ICD-10-CM 433.1 Occlusion and stenosis of carotid artery 433.10 Occlusion and stenosis of carotid artery without cerebral infarction convert 433.10 to ICD-10-CM 433.11 Occlusion and stenosis of carotid artery with cerebral infarction convert 433.11 to ICD-10-CM 433.2 Occlusion and stenosis of vertebral artery 433.20 Occlusion and stenosis of vertebral artery without cerebral infarction convert 433.20 to ICD-10-CM 433.21 Occlusion and stenosis of vertebral artery with cerebral infarction convert 433.21 to ICD-10-CM 433.3 Occlusion and stenosis of multiple and bilateral precerebral arteries 433.30 Occlusion and stenosis of multiple and bilateral precerebral arteries without cerebral infarction convert 433.30 to ICD-10-CM 433.31 Occlusion and stenosis of multiple and bilateral precerebral arteries with cerebral infarction convert 433.31 to ICD-10-CM 433.8 Occlusion and stenosis of other specified precerebral artery 433.80 Occlusion and stenosis of other specified precerebral artery without cerebral infarction convert 433.80 to ICD-10-CM 433.81 Occlusion and stenosis of other specified precerebral artery with cerebral infarction convert 433.81 to ICD-10-CM 433.9 Occlusion and stenosis of unspecified precerebral artery 
433.90 Occlusion and stenosis of unspecified precerebral artery without cerebral infarction convert 433.90 to ICD-10-CM 433.91 Occlusion and stenosis of unspecified precerebral artery with cerebral infarction convert 433.91 to ICD-10-CM