2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Neurotic Disorders, Personality Disorders, And Other Nonpsychotic Mental Disorders 300-316 > Anxiety, Dissociative And Somatoform Disorders 300.* > 2008 ICD-9-CM Diagnosis 300.02 Generalized anxiety 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 Therefore, this code may be out of date.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 300.02 can be accessed here. 300.02 is a specific code that can be used to specify a diagnosis 300.02 contains 3 index entries View the ICD-9-CM Volume 1 300.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 300.02: Anxiety (neurosis) (reaction) (state) 300.00 generalized 300.02 Disorder - see also Disease psychogenic NEC (see also condition) 300.9 anxiety 300.00 generalized 300.02 Neurosis, neurotic 300.9 anxiety (state) 300.00 generalized 300.02