As of the publication of this text revision (in the late spring of 2000), the official coding system in use in the United States is the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM). Throughout much of the world, the official coding system is the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10). The preparation of DSM-IV has been closely coordinated with the preparation of Chapter V, "Mental and Behavioural Disorders," of ICD-10 (developed by the World Health Organization in anticipation of its eventual implementation in the United States). Consultations between the American Psychiatric Association and the World Health Organization have resulted in DSM-IV codes and terms that are fully compatible with the codes and terms in the tabular index of ICD-10. To facilitate the use of DSM-IV internationally, presented below is the DSM-IV Classification with the ICD-10 codes.