What Are the Primary Benefits of HL7 V2 versus HL7 V3?

October 5th, 2006 by Dave Shaver

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Posted in HL7 Terms, HL7 Standards

In HL7 messaging, there are different HL7 standards from which to choose. HL7 terms like V2 and V3 are often used. Outlined below are the benefits of each of these HL7 standards.

HL7 V2 Benefits:

  • Reflects the complex “everyone is special” world of healthcare
  • Much less expensive to build HL7 interfaces compared to custom interfaces
  • Provides 80 percent of the interface and a framework to negotiate the remaining 20 percent on an interface-by-interface basis
  • Historically built in an ad hoc way, allowing the most critical areas to be defined first
  • Generally provides compatibility between 2.X versions

HL7 V3

  • More of a “true standard” and less of a “framework for negotiation”
  • Model-based standard provides consistency across entire standard
  • Application roles well defined
  • Much less message optionality
  • Less expensive to build and maintain mid-to-long term interfaces
  • Many decades of effort over ten year period reflecting “best and brightest” thinking

Learn more about the HL7 standards, including HL7 v3, with an in-depth white paper entitled The Evolution of HL7 (long version).

Last 5 posts by Dave Shaver

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