2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Neurotic Disorders, Personality Disorders, And Other Nonpsychotic Mental Disorders 300-316 > Personality Disorders 301.* > 2008 ICD-9-CM Diagnosis 301.12 Chronic depressive personality disorder  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 Therefore, this code may be out of date.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 301.12 can be accessed here. 301.12 is a specific code that can be used to specify a diagnosis 301.12 contains 4 index entries View the ICD-9-CM Volume 1 301.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 301.12 also known as: Chronic depressive disorder Depressive character or personality Index entries containing 301.12: Character depressive 301.12 Disorder - see also Disease personality 301.9 hypothymic 301.12 Personality depressive (chronic) 301.12 hypothymic 301.12