2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Neurotic Disorders, Personality Disorders, And Other Nonpsychotic Mental Disorders 300-316 > 2006 ICD-9-CM Diagnosis 315 Specific delays in development View the most recent version of ICD-9-CM 315 315 is a non-specific code that cannot be used to specify a diagnosis 315 Excludes that due to a neurological disorder (320.0-389.9)