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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Cerebrovascular Disease 430-438 > Occlusion And Stenosis Of Precerebral Arteries 433.* > 2008 ICD-9-CM Diagnosis 433.80 Occlusion and stenosis of other specified precerebral artery without cerebral infarction  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 433.80 can be accessed here. 433.80 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 433.* hierarchy