ISO/TR 13128:2012 PDF

Overview - ISO/TR 13128:2012 (Clinical document registry federation)

ISO/TR 13128:2012 is an informative Technical Report in health informatics that describes how Clinical Document Registries (CDRs) can form federations and optionally replicate registry content. It provides recommendations on federation metadata, federated replicas, query-processing behaviours, and use cases (regional sharing, disaster resilience, national research networks). The Report assumes patient identity resolution is handled separately (for example by IHE XCPD) and is not a conformance standard.

Key topics and technical requirements

• Federation model and metadata
  • Recommendations for creating and managing federations of CDRs and storing federation-related metadata (membership, replication info).
  • Support for centralized and decentralized federation architectures.
• Federated replication
  • Definitions of federated replica and federated replication (full or partial replication of registry objects).
  • Replication modes: full vs partial, real-time vs scheduled batch, and hierarchical vs peer-to-peer (P2P).
  • Capabilities for creating, maintaining and removing replicas.
• Query processing semantics
  • Distinction between local queries, local queries with replica, and federated queries.
  • Example query-processing policies to improve performance and fault tolerance (e.g., use local replicas to avoid routing; route to replica holders when origin is unavailable).
  • Informative examples to clarify expected behaviours; note the Report is informational and not prescriptive for conformance.
• Scope constraints
  • Focus is on registry metadata (objects), not on document repositories or patient identity management.
  • Replication applies to registry objects (metadata), not to document payload replication.

Practical applications and intended users

ISO/TR 13128 is relevant for:

• Healthcare IT architects and system integrators designing CDR federations or regional/national health information exchanges (HIEs).
• Vendors of registry software and CDR implementers planning federated replication and query-routing logic.
• Health authorities and policy makers planning resilient clinical-document sharing networks (disaster recovery, 24/7 access).
• Research infrastructures that require federated search across institutional registries (national specimen or study catalogs).

Typical uses:

• Regional document sharing (with or without replication) to provide unified query access.
• Replication for availability and improved query performance in low-connectivity environments.
• Hierarchical or P2P replication strategies for national research or clinical networks.

Related standards

• ISO/TS 27790 (Document registry framework) - normative reference.
• Integrating the Healthcare Enterprise (IHE) profiles referenced for related workflows (e.g., IHE XCA, IHE XCPD).
• Other health IT standards referenced (CDA, HL7) for interoperability context.

Keywords: ISO/TR 13128, Clinical Document Registry, CDR federation, federated replication, health informatics, federated query, registry metadata, IHE XCA, IHE XCPD.