The health care facility “Breitenstein” makes use of a hospital information system to coordinate clinical processes and document medical health data. So as to comply with novel Austrian legislation and fit the “ELGA” architecture, the system has to be adapted. This paper is based on a literature research and gives answers to technical and legal aspects of “ELGA”. The introduction of an IHE connector and a CDA manager are the main changes to the current hospital information system. The implementation of interfaces that allow an integration of further “ELGA” features possible are the next step of the project.