Using National Health Insurance Database to explore medical usage of Catastrophic Disease patients

政府為促進國人健康,並以社會保險的形式分攤弱勢團體的就醫需求,於民國84年開始實施全民健康保險,實施至今超過20年,而且納保率已高達99%。重大傷病證明是全民健保的主要特色之一,持有重大傷病證明卡的病患就醫時可免除部分負擔,減輕罹患重病患者的醫療負擔。截至106年2月約有4%國人領有重大傷病證明卡,但其醫療費用佔健保支出超過 27%,預期這兩個數值會因人口老化而逐年上升,使得重大傷病的相關議題越來越受到重視。 本文以全民健保資料庫中的重大傷病證明明細檔(HV)為基礎,以2005年百萬人抽樣檔之承保紀錄檔(ID)、門診處方及治療明細檔(CD)及住院醫療費用清單明細檔(DD)輔助,探究罹患重大傷病發生及死亡議題,提出判定發生、死亡的準則,並且依此分析各種疾病發生率與死亡率的關係。另外,本文也使用資料庫內容驗證重大傷病患者與非重大傷病患者之間醫療費用的差異,研究也發現新發生的病患就醫率偏低,並以國際疾病分類代碼驗證重大傷病門診處方及治療明細檔(HV_CD)資料抓取的準確性。Taiwan started National Health Insurance (NHI) in 1995, for more than 20 years, and more than 99% people are covered in this social insurance plan. It is believed that the NHI has further enhanced the health of Taiwan’s people.Catastrophic illness(CI)card is one of the key features in the NHI and people with this card can enjoy waiver of copayment and other medical benefits which reduce the financial burden of CI patients. For example, about 4% Taiwan’s population were with the CI card and they spend more than 27% of total medical expenditure of NHI. Since the probability with CI increases with age, the population aging and prolonging life are expected to worsen the financial burden of the NHI. Our goal is to explore the medical need and its trend of CI patients, via the data from the NHI Database, including Registry for catastrophic illness patients(HV), Registry for beneficiaries(ID), Inpatient expenditures by admissions(DD)and HV’s Ambulatory care expenditures by visits(HV_CD). Since the medical records do not cover all the required information, we propose several criteria for data analysis, such as the rules of judging whether the patients incur CI and the CI patients passed away. We found that the incidence rates and mortality rates of CI patients decrease with time. Also, there are questions about the data quality regarding the HV_CD database and more than 50% new CI patients do not have medical records of CI diseases