2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Other Psychoses 295-299 > Episodic Mood Disorders 296.* > 2008 ICD-9-CM Diagnosis 296.50 Bipolar i disorder, most recent episode (or current) depressed unspecified degree  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 Therefore, this code may be out of date.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 296.50 can be accessed here. 296.50 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 296.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog.