Information and data sharing across heterogeneous e-health systems while focusing on the management of patient care have become the backbone of the modern delivery of sustainable medicine services.
An eHealth interoperability backbone represents part of the Slovenian national eHealth project with an important mission to improve the quality of health services with effective electronic solutions. It is a crucial component of the national information infrastructure that enables integration of various information systems. Implementation has brought out many important challenges that are linked to questions as: how to enable an exchange of main clinical documents; how to secure this data exchange; how to identify data about a specific patient in different health institutions; how to control data access; how to answer simple population questions (e.g. what is the percentage of patients with high BMI?).