2 HL7 V3 What (or who) is HL7? Why is it important? What is V3? How does V3 apply to Medication Information?How does HL7 V3 relate to UKCPRS?
3 What is HL7? International Standards Developing Organisation (SDO) Producing standards (or specifications) for messaging of clinical and administrative data between systems in healthcareModelling and sending medical messages is equated to the top layer of the ISO Communications model
4 HL7 Mission Statement“To provide standards for the exchange, management and integration of data that support clinical patient care and the management, delivery and evaluation of healthcare services. Specifically, to create flexible, cost effective approaches, standards, guidelines, methodologies and related services for interoperability between healthcare information systems”
5 Why is HL7 Important? To the NHS To the Healthcare IT Industry To patients
6 For the NHS?In early summer 2002, HL7 Version 3 was designated as a “strategic direction” for NHS Standards by the Information Standards BoardWorks in co-operation with ISO (the International Standards Organisation) and CEN (the European Standards Organisation)
7 For the Healthcare IT Industry Domain is messaging of “clinical and administrative data in healthcare”Membership includes healthcare providers, health insurance companies, clinicians, academics and government representativesPutting one’s own home in order!
8 For Patients?Focussed around unambiguous messaging of patient care interactionsVolunteer organisation with strict operating procedures for development to ensure openness, consensus and balance of interestInternational – wide body of expertise and experienceSafe Communication about Life Critical Information
9 What is V3? What was/is V2? Why is V3 needed? V3 Principles the Static Corethe Dynamic Components
10 What was/is V2? Initial development (late 1980s) produced V2 Widely used in US, particularly in Secondary Care sectorAlso used internationallyBased on structured, segmented, coded messagesNot intuitive, flexible only at the cost of clarity
11 Why is V3 Needed?Stronger methodology to support true interoperability of systemsReflecting development of messaging, including new technologiesAllowing more sensible internationalisation
12 V3 Core – the Static Model Reference Information Model (RIM)Uses UML like methodology and notation6 core classes and relationshipsGives a consistently ordered set of classes and attributes foundational for unambiguous messagingDomain Information Model (D-MIM)“Specialises” RIM classes for a particular domain area (e.g. Pharmacy, Billing etc.)Refined Message Information Model (R-MIM)“Constrains” the D-MIM for a particular set of messages (e.g. prescribing)
14 V3 Medication Information Focussed on dealing with messages to support the Supply and Administration of therapeutic substances to patientsInitially:Bare bones systemsPrescribingDispensingAdministrationMore complex messagingMaster file updateKnowledge Management
15 Messaging about Medicines Primary CareETPGP2GP RecordsSecondary CarePrescribing system to Pharmacy SystemPharmacy system to Robotic DispenserPrescribing system to Administration SystemPrimary to Secondary Care (& V/V)
17 How does HL7 V3 relate to UKCPRS? Medication Messages must use a “Vocabulary” to describe medicinesRepresented in the Pharmacy D-MIM by two CMETs (modelled data)Medicinal Product (VMP/AMP)Packaged Medicinal Product (VMPP/AMPP)Also Route of AdministrationInternational understanding and harmonisation where appropriate
21 Want to know more??? HL7 UK Website HL7 UK membership/training HL7 UK Technical Committee meetingUK Medication Information group (!)Main HL7 Pharmacy List ServerMain HL7 WebsiteHolidays in the US three times a year…….