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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Hereditary And Degenerative Diseases Of The Central Nervous System 330-338 > Cerebral Degenerations Usually Manifest In Childhood 330.* > 2007 ICD-9-CM Diagnosis 330.9 Unspecified cerebral degeneration in childhood  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 Therefore, this code may be out of date.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 330.9 can be accessed here. 330.9 is a specific code that can be used to specify a diagnosis 330.9 contains 2 index entries View the ICD-9-CM Volume 1 330.* hierarchy Index entries containing 330.9: Degeneration, degenerative brain (cortical) (progressive) 331.9 childhood 330.9 specified type NEC 330.8 Heredodegeneration 330.9 macular 362.70