Abstract 202: Impact of Diagnosis Name Changes in the Comprehensive Medical Expenses Payment System on Medical Expenses in Japan

In Japan, medical expenses are increasing, which has been shifting from 36.6 trillion yen in FY 2010 to 40.0 trillion yen in FY 2010. 1 The system changed to the conventional payment method, and a comprehensive medical expenses payment system (DPC) centered on patients (diseases) was introduced. Medical expenses according to this method are calculated from the main disease name diagnosed at the time of admission. Therefore, it depends on the accuracy of the diagnosis name. Regarding the relevance of this diagnosis, there is one lesson from the trend of the death cause statistic of our country. In this study, we aimed to estimate the effect on medical expenses when the diagnosis name change similar to the death causes statistics around 1995 occurred, using DPC data. The targeted DPC data relates to discharged patients from April 2013 to March, 2013 DPC Hospital Group I 80 DPC Hospital II Group 90 DPC Hospital III Group 1327 Hospital. Diagnosis group for each diagnosis group classification for each diagnosi...