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.
For more information, refer to section 2.11.2 in V2.4 of the HL7 Standard!
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HL7 News:HL7 Announces Ticia Gerber as Director of Global Partnership and Policy
Wednesday, 8th May 2013
Health Level Seven® International (HL7®), the global authority for interoperability and standards in healthcare information technology with members in 55 countries, today announced that Ticia Gerber has joined the staff as its Director of Global Partnership and Policy. In this new role, Ms. Gerber will lead policy and advocacy activities, as well as expand HL7's partnerships with key industry stakeholders.
HL7 Announces New Skill Building for Certification Webinar Series
Wednesday, 1st May 2013
Health Level Seven® International (HL7®), the global authority for interoperability and standards in healthcare information technology with members in 55 countries, today announced that registration is now open for its new Skill Building for Certification webinar series. Webinar topics will include Version 2, Version 3 and the Clinical Document Architecture (CDA®). This 12-part series will begin on May 14 and run through June 20. Each webinar begins at 12 Noon Eastern and is 90 minutes in length. HL7 is offering an introductory price of 50% off the regular rate for this webinar series. Tuition for each course or part (consisting of two webinars) is $99 for HL7 members and $195 for non-members
HL7 Licenses its Standards at No Cost and Future Membership Model
Monday, 1st April 2013
Health Level Seven® International (HL7®), the global leader in developing and implementing data, functional, and interoperability standards for healthcare IT, today announced it is making much of its intellectual property (IP) freely available under licensing terms.
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