Interoperability Specification for Liaison Records (Cahier de Liaison): Implementation Guide based on FHIR R4

Details

This document serves as an implementation guide for 'Cahier de Liaison' version 3.0.0, built upon the HL7 FHIR R4 standard. It meticulously details the API specifications required for managing the entire lifecycle of a 'Liaison Record' in electronic health records (creation, update, deletion, and search). Two primary options are proposed for data exchange: The first is the RESTful option, which uses HTTP methods like POST or PUT to operate on specific resources (e.g., DocumentReference). This approach requires managing related 'actors' (such as Patient, Practitioner) individually during creation/update. The second is the transactional option, which allows bundling multiple related resources into a single Bundle for atomic processing of data changes. The guide clearly lists these operations—creation, update, deletion, and search—specifying the FHIR R4 resource used, necessary profiles, and the exact HTTP methods (POST, PUT, GET, DELETE) required. This specification provides technical guidelines for achieving standardized data exchange in healthcare information systems, serving as a critical reference point for linking and sharing clinical records between different systems, which is highly relevant to Japanese healthcare IT development.