Diagnostic an Statistical Manual of Mental Disorders, 4th Edition, Text Revision, also known as DSM-IV-TR, is a manual published by the American Psychiatric Association (APA) that includes all currently recognized mental health disorders. The coding system utilized by the DSM-IV is designed to correspond with codes from the International Classification of Diseases, commonly referred to as the ICD. Since early versions of the DSM did not correspond with ICD codes and updates of the publications for the ICD and the DSM are not simultaneous, some distinctions in the coding systems may still be present. For this reason, it is recommended that users of these manuals consult the appropriate reference when accessing diagnostic codes.