HL7 version 3
Introduction
Version represents a significant departure from "business as usual" for HL7.
Offering lots of optionality and thus flexibility, the V2.x series of messages
were widely implemented and very successful. These messages evolved over
several years using a "bottom-up" approach that has addressed individual
needs through an evolving ad-hoc methodology. There is neither a consistent
view of that data that HL7 moves nor that data's relationship to other data.
HL7's success is also largely attributable to its flexibility. It contains
many optional data elements and data segments, making it adaptable to almost
any site. While providing great flexibility, its optionality also makes it
impossible to have reliable conformance tests of any vendor's implementation
and also forces implementers to spend more time analyzing and planning their
interfaces to ensure that both parties are using the same optional features.
Version 3 addresses these and other issues by using a well-defined methodology
based on a reference information (i.e., data) model. It will be the most
definitive standard to date. Using rigorous analytic and message building
techniques and incorporating more trigger events and message formats with
very little optionality, HL7's primary goal for Version 3 is to offer a
standard that is definite and testable, and provide the ability to certify
vendors' conformance. Version 3 uses an object-oriented development
methodology and a Reference Information Model (RIM) to create messages.
The RIM is an essential part of the HL7 Version 3 development methodology,
as it provides an explicit representation of the semantic and lexical
connections that exist between the information carried in the fields of
HL7 messages.
New capabilities offered in Version 3 include:
- Top-down message development emphasizing reuse across multiple contexts and semantic interoperability
- Representation of complex relationships
- Formalisms for vocabulary support
- Support for large scale integration
- Solving re-use and interoperability across multiple domain contexts
- A uniform set of models
- Expanded scope to include community medicine, epidemiology, veterinary medicine, clinical genomics, security, etc.
HL7 v3 Glossary
To ease the orientation in the standard and terminology, the HL7 Glossary
was translated into Czech language.
Events
HIMSS 2011
Presentation of HL7 v. 3 Standard at HIMSS shows most updated point of view of peaple from HL7 Int. PDF is here, all presentations from HIMSS made by HL7 Int. can be found here.
HL7 Roadshow 2004
On Friday, April 16th, 2004 the
Health Level 7 Roadshow has
taken place as an accompanying event of IJM EuroMISE 2004.
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