Introduction: The arrival of diverse and disparate hospital information systems by different-brands, on various platforms in the field of electronic health, has led to problems of interoperability. Interoperability is defined as the ability for two (or more) systems or components to exchange information and to use the information that has been exchanged. This paper aims to provide the hospital information system interoperability model. Provided that it cover all aspects of the interoperability.
Method: This study is an applied- descriptive. The study includes three phase, at first required indicators to achieve all aspects of interoperability in hospital information system will be identified. In the following, provide the hospital information system interoperability model. Finally, this model with using a scenario based on a software architecture analysis method will be evaluated.
Results: In this study, in order to achieve complete interoperability in Hospital Information System has been used a HSB approach. The presented model has necessary indicators for achieving all levels of interoperability (Technical, syntactic, semantic and organizational). EHealth experts confirmed this model using with architecture trade-off analysis method (ATAM).
Conclusion: Achieving interoperability in healthcare information systems due to the complexity, diversity and standards is very difficult. And this challenges include technical, syntactic, semantic organizational. Increasing degree of interoperability and compatibility between hospital information systems cause to facilitate cooperation system together and increase efficiency, clinical performance and management of this systems.