NHS England North West GMSA - IHE Laboratory Testing Workflow (LTW) - Local Development build (v0.0.1) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions ( src
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From ISO-13606
The set of information committed to one EHR as a result of a clinical encounter or a record documentation session. Examples of COMPOSITION are Progress note, Laboratory test result form, Radiology report, Referral letter, Clinic visit, Clinic letter, Discharge summary, Functional health assessment, Diabetes review.
Document Consumer MHDIntermediaryRegional Integration Engine (RIE)Master Patient IndexMPIDocument Registry XDSIron IslandsDocument Registry XDSWesterlandsClinical Data Source QEDmWesterosDocument Responder MHDNational Record LocatorFind Document References [ITI-67]Retrieve patient's document pointers (GET)List of FHIR DocumentReference (UKCore)opt[Identify Systems with Records]Used to identify which systems have documents for the patientPatient Demographics Query [ITI-78]List of FHIR Patient (includes MRN from providers)Registry Stored Query [ITI-18]List of DocumentEntryRegistry Stored Query [ITI-18]List of DocumentEntryQuery Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient Information (DocumentReference)List of FHIR DocumentReferenceTransformandAggregateList of FHIR DocumentReference (UKCore + IHE UK metadata)
Document Consumer MHDIntermediaryRegional Integration Engine (RIE)Master Patient IndexMPIDocument Registry XDSIron IslandsDocument Registry XDSWesterlandsClinical Data Source QEDmWesterosDocument Responder MHDNational Record LocatorFind Document References [ITI-67]Retrieve patient's document pointers (GET)List of FHIR DocumentReference (UKCore)opt[Identify Systems with Records]Used to identify which systems have documents for the patientPatient Demographics Query [ITI-78]List of FHIR Patient (includes MRN from providers)Registry Stored Query [ITI-18]List of DocumentEntryRegistry Stored Query [ITI-18]List of DocumentEntryQuery Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient Information (DocumentReference)List of FHIR DocumentReferenceTransformandAggregateList of FHIR DocumentReference (UKCore + IHE UK metadata)
The Intermediary
optionally calls the Master Patient Index
. This is similar to the use of Cross-Community Patient Discovery (XCPD)
with XDS.b but uses ITI-78 in place of HL7 v3 ITI-55 or HL7 v2 PDQ ITI-21
Clinical Data Consumer QEDmIntermediaryRegional Integration Engine (RIE)Master Patient IndexMPIClinical Data Source QEDmPykeClinical Data Source QEDmLannisportClinical Data Source QEDmWesterosQuery Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient Informationopt[Identify Systems with Records]Used to identify which systems have documents for the patientPatient Demographics Query [ITI-78]List of FHIR Patient (includes MRN from providers)Query Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient InformationList of FHIR {resource}Query Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient InformationList of FHIR {resource}Query Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient InformationList of FHIR {resource}TransformandAggregateList of FHIR {Resource}
Clinical Data Consumer QEDmIntermediaryRegional Integration Engine (RIE)Master Patient IndexMPIClinical Data Source QEDmPykeClinical Data Source QEDmLannisportClinical Data Source QEDmWesterosQuery Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient Informationopt[Identify Systems with Records]Used to identify which systems have documents for the patientPatient Demographics Query [ITI-78]List of FHIR Patient (includes MRN from providers)Query Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient InformationList of FHIR {resource}Query Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient InformationList of FHIR {resource}Query Existing Data [PCC-44]HL7 IPA Finding and Retrieving Patient InformationList of FHIR {resource}TransformandAggregateList of FHIR {Resource}
Within the system creating the genomics order, the practitioner will select a form for the test required. Below are several examples from North West Genomic Laboratory Hub - Test Request Forms
.
How this is implemented will vary between different NHS organisations and systems they use.
For submission, this form will be converted by the Order Placer
to a communication format called HL7 FHIR
(and for compatability reasons HL7 v2
.
If the Order Placer
has a FHIR enabled Electronic Patient Record (e.g. EPIC, Cerner, Meditech, etc), they may use HL7 SDC - Form Data Extraction
to assist with this process.
It is not expected the NW GLH Laboratory Information Management System (LIMS) will support UK SNOMED CT, and the RIE will handle the conversion either internally using FHIR ConceptMap
or a terminology service with the following capabilities IHE Sharing Valuesets, Codes, and Maps (SVCM)
A Canonical model
is present which is expressed via HL7 FHIR and can be implemented via HL7 v2 and FHIR and IHE XDS. This is conformant to the latest versions of HL7 UK Core
and NHS England Data Model and Dictionary
. Although this is focused on Genomics, it also includes elements from Pathology and Radiology for compatability reasons. This also includes mandatory use of NHS England National Procedure Codes.
A Canonical model
is present which is expressed via HL7 FHIR and can be implemented via HL7 v2 and FHIR and IHE XDS. This is conformant to the latest versions of HL7 UK Core
and NHS England Data Model and Dictionary
. Although this is focused on Genomics, it also includes elements from Pathology and Radiology for compatability reasons. This also includes mandatory use of NHS England National Procedure Codes.
(copied from BE eHealth Platform Federal Core Profiles
) Extension able to hold a reference and a concept (Temporary solution until https://jira.hl7.org/browse/FHIR-44661 is solved and see Zulip: https://chat.fhir.org/#narrow/stream/179280-fhir.2Finfrastructure-wg/topic/Backporting.20CodeableReference )
Backport of FHIR R5 CodeableReference. (copied from BE eHealth Platform Federal Core Profiles
).
Extension able to hold a reference and a concept (Temporary solution until https://jira.hl7.org/browse/FHIR-44661 is solved and see Zulip: https://chat.fhir.org/#narrow/stream/179280-fhir.2Finfrastructure-wg/topic/Backporting.20CodeableReference)
Note: links to HL7 FHIR Practitioner has removed several IHE XDS Document Entry fields, and just retained identifier and name. It is expected these values would be available via the NHS England Healthcare Worker API which may conform to IHE Mobile Care Services Discovery (mCSD)
interface contracts.
It is not clear in Enterprise/Regional use of FHIR which approach Resource
or Reference
should be taken, both HL7 v2 and FHIR support Reference aggregate or entities by identity
from Dommain Driven Design (DDD) and this appears to also be followed by IHE XDS and DICOM.
In addition, NHS England Data Dictionary
and NHS England HL7 v2 ADT Message Specification
favour Reference
NHS England FHIR STU3/R4 specifications around Messaging, tend to favour Resource
.
Simple Extension of type CodeableConcept: (copied from BE eHealth Platform Federal Core Profiles
) Extension able to hold a reference and a concept (Temporary solution until https://jira.hl7.org/browse/FHIR-44661 is solved and see Zulip: https://chat.fhir.org/#narrow/stream/179280-fhir.2Finfrastructure-wg/topic/Backporting.20CodeableReference )
The Intermediary
, North West GMSA Regional Integration Engine (RIE) is an Enterprise Service Bus
most commonly known in the NHS as a Trust Integration Engine (TIE).
The ESB has a Canonical Data Model
which is expressed in this Implementation Guide using HL7 FHIR. This model is common to all the exchange formats used in the ESB:
This canonical model is not specific to Genomics. It is focused on standard message construction patterns in particular CorrelationIdentifier
such as Order Numbers and Episode/Stay Identifiers and use of Clinical Coding Systems such as UK SNOMED CT.
To support genomics workflow, this guide is aligned to enterprise workflow processes described in IHE Laboratory Testing Workflow
, terminology from this guide especially around Actors is used throughout this Implementation Guide.
This is based on the definition of PL from NHS England HL7 v2 ADT Message SpecificationSHOULD
be followed and SHALL
be used in ORC-12.
In addition, this includes of PL.11 to hold organisation ODS code.
Extended Composite Name and Identification Number for Organizations.
The definition of XON from NHS England HL7 v2 ADT Message SpecificationSHOULD
be followed and SHALL
be used in ORC-21.
This guide follows IHE Laboratory Testing Workflow
, which describes how to use HL7 v2 orders and reports at an enterprise level. It will contain several modifications in order to support HL7 FHIR Messasging
, these messages will be closely related to HL7 v2 Messages to help with adoption.
For documentation purposes, HL7 v2 version used will be 2.5.1 (this also matches NHS England FHIR Genomics, HL7 International v2 standards around structured Genomic reporting and Digital Health and Care Wales standards around ORU_R01)
Message Bridge
between regional Trust Integration Engines (TIE)/GLH Laboratory Information System (LIMS) and the national Genomic Order Management Service (LAB-4 and LAB-5)
This includes making use of FHIR Identifier assigner.identifier.value
(HL7 v2 Assigning Facility
in a variety of ID types) to distinguish these identifiers between different organisations, the recommendation is to use ODS Code
, e.g.
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