Twenty-first-century health systems will be built around data and information. An integrated health information system enables the secure flow of data to where they can be used to create information and knowledge to advance policy and health system objectives. This report describes the requirements and the benefits of an integrated health information system; outlines the current situation in Korea in the context of progress across OECD countries; and recommends policy and operational changes to overcome barriers to the efficient exchange and sharing of health data and establish an integrated health information system that supports continuous learning, improvement and innovation.