[Reference tables of WHO Chapter V (F) of the 10th revision of the International Classification of Diseases (ICD-10): ICD-9 vs. ICD-10].

With Chapter V of the Tenth Revision of the International Classification of Disease (ICD-10), the World Health Organization introduces a new classificatory approach. This instrument, which differs considerably from ICD-9, follows the principle of operational diagnosis introducing psychopathological, time- and course-related diagnostic criteria for the first time in the development of the ICD-system. Following a descriptive approach, the differentiation between psychosis and neurosis has been abandoned with the consequence of classifying the corresponding disorders under different diagnostic terms. To ensure the applicability of the new classificatory system, additional documents were developed by the Department of Mental Health of WHO. The WHO-Crosswalks, which were translated and adapted for the conditions in German-speaking countries by the authors, will provide a help concerning the classification of ICD-9 categories within ICD-10. Each diagnostic category of ICD-9 is compared with the corresponding categories in ICD-10 including a critical comment in the text.