HL7 V2.x Inter-Version Compatibility Guide
A simple, practical and easy-to-follow Explanation of how to make Different Versions of HL7 V2.x Interoperate.
Are the Different Versions of HL7 V2.x Interoperable?
Are all the different V2.x Standards compatible or do all HL7 systems and interfaces in our Organisation have to be the same version? Will V2.3.1 communicate with the new V2.7? The question of compatibility and interoperability between different versions of HL7 is often asked. Many systems designers are concerned that HL7-compliant systems using different versions of HL7 (e.g. V2.3.1, V2.4, V2.5, V2.5.1, V2.6 and the new V2.7) will not be compatible. Quite the contrary is true: HL7 has been singularly successful in getting different versions of HL7 to interoperate. HL7 has precise rules for compatibility between its versions. These rules allow the sending and receiving of HL7 messages and converting their contents to data values with full backward compatibility between all 2.x versions of HL7.
As a result, messages created by systems using all HL7 standards of the V2.x series are fully compatible - if the business rules of sending and receiving systems are the same and the implementations have adhered to the HL7 version compatibility guidelines. These guidelines are not well-known and even less well-understood.
In summary the rules are:
In practice, correct implementation of the HL7 V2.x inter-version compatibility rules allows different versions of HL7 to exchange data without any significant problems. Of course, new functionality added by a newer version may not be supported by an older version. In this case the business rules of interoperating must be agreed on by sender and receiver.
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For more information, refer to section 2.11.2 in V2.4 of the HL7 Standard!
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HL7 V2.x Messaging Study Guide - the Study Guide to the above Textbook. Both books are considered mandatory reading and study for candidates sitting the HL7 International V2.x Analyst Certification exam.
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HL7 News:Health Level Seven Announces New Board Members, Fellows and Volunteer of the Year Awards
Wednesday, 13th September 2017
San Diego, CA – September 13, 2017 – Health Level Seven® (HL7®) International, the global authority on interoperability of health information technology with members in 55 countries, today announced election results for its Board of Directors and Technical Steering Committee at the 31st Annual Plenary and Working Group Meeting in San Diego, CA. The 2017 HL7 Fellows and the 2017 recipients of the W. Edward Hammond, PhD, Volunteer of the Year Awards were also recognized at the event.
HL7 Publishes First Domain Analysis Model for Clinical Sequencing
Monday, 10th April 2017
Health Level Seven® International (HL7®), the global authority for interoperability in healthcare information technology and the home of the Fast Healthcare Interoperability Resources (FHIR®) standard, today announced that it has published the HL7 Domain Analysis Model: Clinical Sequencing, a model which captures precision medicine's use cases to facilitate interoperability of genetic and genomic data. This domain analysis model (DAM) was the basis for the design of FHIR Genomics, the genomics components designed under purview of the HL7 Clinical Genomics Work Group within FHIR Release 3. The DAM has also served as the foundation for underlying use cases selected for the Sync for Genes (www.sync4genes.org) program.
HL7 Announces Value-Based Care Summit Focused on HL7® FHIR®
Wednesday, 29th March 2017
Health Level Seven® International (HL7®), the global authority for interoperability in healthcare information technology and the home of the Fast Healthcare Interoperability Resources (FHIR®) standard, today announced that the HL7 Value-Based Care FHIR Summit will take place on April 11 and 12, 2017 in Chicago, IL. The event will be co-hosted by Blue Cross Blue Shield Association (BCBSA), Microsoft and the AHIP Innovation Lab. The purpose of the event is to demonstrate how FHIR can support value-based care and highlight how the standard is being successfully implemented to solve some of today's interoperability challenges. It will include discussions and demonstrations of the technologies that enable improved provider-payer collaboration for information exchange, which is essential to the transition to the value-based care model.
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