T.P. Sabgayda¹, Ye.M. Sekrieru¹, S.Yu. Nikitina^2
1Federal Research Institute for Health Organization and Informatics of Ministry of Health and Social Development of the Russian Federation, Moscow
²Federal State Statistics Service, Moscow, Russia

Summary. The results of analysis of the frequency of death from unspecified diagnosis of somatic and infectious diseases are reported in the article. The purpose of this analysis was to identify information that most often has being lost as a result of the use of unspecified causes of death.

Deaths of the Russian population in 2010 were analyzed according to official statistics of Federal State Statistics Service. The classes of causes was considered, for which the number of deaths for the year exceeded 2000, they are nine: I, II, IV, V, VI, IX, X, XI and XIV. Software Microsoft Office Access 2003 used for the analysis of database. The frequency of unspecified causes of death was analyzed: the majority of the causes with codes that end in .9 in fourth place; causes with other codes, if they mean the unspecified characteristics of the pathological process; causes with the codes that contain an asterisk; causes that are not used, if we know the underlying cause of death. The share of unspecified causes within the class was analyzed depending on the place of death, age of the deceased, category specialist, established the cause of death. Shares of unspecified diagnoses in the different groups of dead were compared using the 2x2 tables using χ-square test. The probability of difference between fractions was calculated, it was considered reliable when the error value p <0.05. Calculations were carried out in the program EPI INFO, Version 3 (EPO CDC, 1988).

It was shown that the unspecified diagnoses of death are fairly common, most often - among cause of death from respiratory diseases, relatively rare - among cause of death from diseases of the digestive system. The level of mortality from causes of different classes is not correlated with the shares of unspecified diagnoses among the class.

Analysis of the prevalence of codes that determine the unspecified causes of death, allowed us to determine the information that was most often lost as a result of their use. In turn, this has allowed identifying problems affecting the poor quality of coding causes of death for the population. These include: poor quality and lack of frequency of laboratory tests to identify the pathogen, lack of frequency of in vivo and postmortem examination tools, lack of competence of health professionals in the field of coding rules causes of death, lack of control of the correctness of coding causes of death, lack of demand in practice for additional data to clarify the cause of death, the careless attitude of health workers to diagnose the cause of death.

It is concluded that a necessary condition for improving the quality of coding causes of death is the practical relevance of reliable information and, accordingly, the presence of the checks of correct coding at all levels of death registration.

Keywords. Codes causes of death, unspecified causes of death, the quality of coding causes of death, ICD-X; mortality statistics, the person established the cause of death, quality control of coding causes of death, underlying cause of death.

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