IHE-XDS
IHE XDS healthcare document sharing repository + registry profile.
Definition
IHE XDS architecture: (1) Document Source: EHR or clinical system that publishes documents to the XDS Affinity Domain. (2) Document Repository: stores documents (CCDA + PDF + CDA R2 + JPEG + DICOM + etc.) + returns documents on demand via web service operations. (3) Document Registry: indexes document metadata (patient ID, document type, author, date, format, mime type) + supports queries by metadata (e.g., 'find all discharge summaries for patient X in last 6 months'). (4) Document Consumer: EHR or clinical viewer that queries Registry + retrieves documents from Repository. (5) Patient Identity Source: provides patient identifiers via PIX/PDQ profiles for patient linking. (6) Audit Record Repository: ATNA audit trail compliance recording all XDS actions. Transactions: ITI-41 Provide and Register Document Set-b, ITI-42 Register Document Set-b, ITI-43 Retrieve Document Set, ITI-18 Registry Stored Query, ITI-38 Cross-Gateway Query (XCA), ITI-39 Cross-Gateway Retrieve (XCA). Document metadata: XDSDocumentEntry (~30 attributes), based on ebRIM/ebRS OASIS ebXML Registry. Transport: SOAP/MTOM web services over HTTPS. Document formats: Document Sharing-Compliant Documents (CCDA + Image + Specialty Notes + etc.). IHE XDS first published 2004, Final Text 2007, multiple revisions since.
Origin
IHE XDS profile published 2004 by IHE ITI domain ; Final Text 2007 ; foundational profile multiple HIE/EHR national/regional architectures.
Example in context
French DMP (Dossier Medical Partage, GIE-SESAM-Vitale + Ministry of Health) uses IHE XDS: hospital discharge summary published Document Source pushes to national XDS Repository, XDS Registry indexes, PCP later queries Registry by patient INS + gets list documents available, retrieves discharge summary CDA R2 via Retrieve Document Set transaction, displays in PCP EHR.