The modern state of classification of the iatrogenias and their place in lifetime and posthumous diagnoses is considered. On the basis of the data of the literature and own material the conclusion about inadequate diagnostics of the iatrogenic pathology in the Medical Institutions of the Russian Federation is done. Modern classification of complications of medical, diagnostic and preventive manipulations is resulted. It is judged the necessity of development of uniform federal criteria of diagnostics and iatrogenic rubricating.