[Presentation and initial results of an expanded diagnostic key for psychosomatic diseases in ICD-9 and ICD-10].

In 1986, an extended diagnostical classification of psychophysiologic disorders (psychosomatic diseases, ICD-9: 316) was developed at the Medical University of Lübeck. The extension consisted of 3 additional code numbers, in which the attached organic system, the kind of the psychological symptoms and the kind of the underlying psychological disturbance could roughly be categorised. The experiences with this additional code numbers on 789 patients are reported. The results show that the additional code numbers are very practical and that they provide important therapeutical information. It is suggested, that in ICD-10 a differentiated classification of psychophysiologic disorders should be established.