ICD9Data.com   Free 2007 ICD-9-CM Database

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 > 2007 ICD-9-CM Diagnosis 331 Other cerebral degenerations  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 Therefore, this code may be out of date.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 331 can be accessed here. 331 is a non-specific code that cannot be used to specify a diagnosis