According to 2005 OECD health data, the total Korean expenditure on health in percentage of GDP is 6%, while other OECD countries spend an average 10% of their GDP. Accordingly, health and medical professionals uniformly point out that the idea of 'proper medical treatment with a reasonable fee' is unfair. Hence, the rationalization of the national health insurance rate is a step toward the financial stability of the national health insurance system and a way to further the realization of proper medical care. The importance of strengthening national health insurance coverage through financial expansion on the national health insurance system should be recognized as an urgent social and political issue.