Virtually Healthcare HL7 FHIR Implementation Guide
0.1.0-current - ci-build United Kingdom flag

Virtually Healthcare HL7 FHIR Implementation Guide, published by Virtually Healthcare. This guide is not an authorized publication; it is the continuous build for version 0.1.0-current built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/Virtually-Healthcare/Virtually-Healthcare-FHIR-Implementation-Guide/ and changes regularly. See the Directory of published versions

ActorDefinition: Service Facade

Official URL: https://fhir.virtually.healthcare/ActorDefinition/ServiceFacade Version: 0.1.0-current
Draft as of 2024-11-06 Computable Name: ServiceFacade

This is a facade service.

This acts as an Anti-Corruption-Layer which transforms data models in external services to an enterprise canonical data model/domain model.

Generated Narrative: ActorDefinition ServiceFacade

Actor: ServiceFacade Service FacadeType: system

This enterprise domain model is evolving, it is based on:

  • NHS Data Dictionary for identifiers and values, such as NHS/CHI/HSCN Number, GMC Code, GMP PPD Code, ODS Code, etc.
  • UK SNOMED CT for clinical terminology.
    • LOINC is used for clinical terminology not covered by SNOMED CT (e.g. physical activity - step count, etc) or when LOINC is the most common terminology in the UK (laboratory?).
  • HL7 UK Core

The enterprise domain model is represented as HL7 FHIR R4 and (where possible) will be compatible with HL7 v2 ADT and ORU, IHE XDS and DICOM. In other words we don't view HL7 (v2 + FHIR), IHE XDS and DICOM as being different, they are just different representations (i.e. pipe+hat, JSON or XML) of a similar enterprise model.