Health Level Seven (HL7)
Version 3 (V3):HL7 V3 is the new generation differs that from V2 in that all
standards developed under V3 arise from an underlying
Reference Information Model (RIM), by applying a set of
development steps defined in the HL7 Development Framework
(HDF). The aim of V3 is to produce consistency in definition of
different information objects and their representation in
messages, thus allowing for easier implementation and the
definition of clearer conformance requirements. Furthermore,
the underlying modelling approach allows for the definition of
standards for information representation other than just
messages including forms, decision-support mechanisms and
electronic patient record structures. HL7 V3 standards are
developed as syntax-independent models. The current
preferred implementation technology is Extensible Mark-up
Language (XML)