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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 Of Cerebral Arteries 434.* > 2008 ICD-9-CM Diagnosis 434.9 Cerebral artery occlusion unspecified  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 Therefore, this code may be out of date.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 434.9 can be accessed here. 434.9 is a non-specific code that cannot be used to specify a diagnosis 434.9 contains 9 index entries View the ICD-9-CM Volume 1 434.* hierarchy Index entries containing 434.9: Cerebromalacia (see also Softening, brain) 434.9 Encephalomalacia (brain) (cerebellar) (cerebral) (cerebrospinal) (see also Softening, brain) 434.9 due to hemorrhage (see also Hemorrhage, brain) 431 recurrent spasm of artery 435.9 embolic (cerebral) (see also Embolism, brain) 434.1 subcorticalis chronicus arteriosclerotica 290.12 thrombotic (see also Thrombosis, brain) 434.0 Occlusion artery NEC (see also Embolism, artery) 444.9 brain or cerebral (see also Infarct, brain) 434.9 cerebral (see also Infarct, brain) 434.9 brain (artery) (vascular) (see also Infarct, brain) 434.9 cerebral (artery) (see also Infarct, brain) 434.9 cerebrovascular (see also Infarct, brain) 434.9 diffuse 437.0 Softening brain (necrotic) (progressive) 434.9 arteriosclerotic 437.0 congenital 742.4 embolic (see also Embolism, brain) 434.1 hemorrhagic (see also Hemorrhage, brain) 431 occlusive 434.9 thrombotic (see also Thrombosis, brain) 434.0