Current Status and Issues of the National Database

Abstract

The characteristic and limitation as an example of medical big data about National Database (NDB), archives of the e-claim data were discussed. The NDB accumulates all e-claim data (medical, DPC, dentistry, and pharmacy) and specific medical examination data from 2009 by the Ministry of Health, Labor and Welfare. NDB is data accumulat- ed for rationalization of medical expenses, but the door is left open to the local govern- ments and researchers. There is the limitation peculiar to NDB in addition to limitation of the e-claim data. However, an electronic rate of the claim data approaching to 98% today, it may be said that NDB can almost grasp the medical care situation of our country. An ex- ample of the usage of NDB, the data book which we offered for the local health care planning of the metropolis and districts, a community medicine design is demonstrat- ed. The big expectation for the NDB is to become the superior source of information of the cohort study for all nations. Because it is poking each other of the receipt infor- mation based on insurance information, combination stops it when insurance is changed, but combination of the e-claim data to cross by the introduction such as medi- cal individual numbers for a long term is enabled and becomes able to grasp a series of episodes from the onset of the disease to convergence in future.