Standardization Framework for Legacy Health Information Systems David Moner 1 , José-Alberto Maldonado 1 , Diego Boscá 1 , Montserrat Robles 1 , Carlos Angulo 1 , Ernesto Reig 1 , Luis Marco 1 , Pablo Serrano 2 and Daniel Pérez 3 1 IBIME group, ITACA Institute, Universidad Politécnica de Valencia, Camí de Vera S/N, 46022 Valencia, Spain (damoca@upv.es) 2 Hospital de Fuenlabrada, Madrid, Spain 3 Hospital General Universitario de Valencia, Valencia, Spain Abstract. The construction of a Virtual Federated Electronic Health Record (VFEHR) requires using standards, tools and an adequate technological infrastructure. We have developed LinkEHR as a framework platform for the standardization, integration and sharing of health information among distributed and heterogeneous Health Information Systems. To perform this task, LinkEHR trusts in archetypes as a mechanism for semi-authomatic normalization of legacy data. This framework has already been evaluated in existing health institutions for the construction of standardized extracts of the EHR. Keywords: Health Information Systems, Standardization, Electronic Health Record, Archetype 1 Introduction For many years, the standardization of health information systems has been an added value with no direct influence in the daily work of healthcare institutions. Many other problems, such as the basic digitalization of the diverse clinical information were more urgent. But healthcare institutions are not a closed environment anymore. Nowadays, information sharing is not the exception but the rule. To obtain a unified and universal electronic health record (EHR) for each person is one of the most important objectives of health informatics. This Virtual Federated EHR (VFEHR) should include all the existing information related to a person from his birth to his death, independently of the place where the patient has received attention. Resolving this problem requires interconnecting all the information systems and achieving an agreement about the format of the transmitted information. But not only the syntax is important, but also the meaning of the information, which assures a correct interpretation by human readers or computer systems. This is called semantic interoperability and it is mainly based on the use of ontologies or medical terminologies and the formal definition of the domain concepts that will be used by the HIS. Both problems are faced by the CEN EN13606 standard for EHR communication.