Toward Semantic Interoperability of Electronic Health Records
This work addresses the challenge of integrating diverse EHR systems for healthcare providers and researchers, but it appears incremental as it builds on existing ontology methods without claiming major breakthroughs.
The paper tackles the problem of semantic interoperability of electronic health records by proposing an ontology-based approach that includes a canonical ontology, modules for rich representations, and mapping axioms to align heterogeneous EHR information.
Although the goal of achieving semantic interoperability of electronic health records (EHRs) is pursued by many researchers, it has not been accomplished yet. In this paper, we present a proposal that smoothes out the way toward the achievement of that goal. In particular, our study focuses on medical diagnoses statements. In summary, the main contributions of our ontology-based proposal are the following: first, it includes a canonical ontology whose EHR-related terms focus on semantic aspects. As a result, their descriptions are independent of languages and technology aspects used in different organizations to represent EHRs. Moreover, those terms are related to their corresponding codes in well-known medical terminologies. Second, it deals with modules that allow obtaining rich ontological representations of EHR information managed by proprietary models of health information systems. The features of one specific module are shown as reference. Third, it considers the necessary mapping axioms between ontological terms enhanced with so-called path mappings. This feature smoothes out structural differences between heterogeneous EHR representations, allowing proper alignment of information.