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Expression Logic Harmonization

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Working Group Meetings

The Expression Logic Harmonization Working Group meets twice weekly at the following times (Eastern):

Monday, 4:00-5:00PM

Thursday, 1:00-2:00PM

Use your microphone and speakers (VoIP) - a headset is recommended. Or, call in using your telephone. United States: +1 (213) 493-0606 Access Code: 926-042-013 Audio PIN: Shown after joining the meeting Meeting ID:926-042-013

Conceptual Phase Goals

  • Produce a conceptual description of the behavior and functionality required to express unambiguously shareable health quality logic.
  • Ensure that this conceptual description is a complete superset of the requirements of HQMF and HeD.
  • Ensure that this conceptual description is compatible with (and expressable in terms of) GELLO and Arden
  • Identify the non-functional requirements involved in defining expression logic for use in health quality artifacts.
  • Provide a research history that describes the development and rationale behind HQMF and HeD.



  • HL7 Implementation Guide: Clinical Decision Support Knowledge Artifact Implementation Guide, Release 1
  • HL7 Version 3 DSTU: Representation of the Health Quality Measures Format (eMeasure), DSTU Release 2
  • HL7 Version 3 Standard: GELLO; A Common Expression Language, Release 2
  • Object Constraint Language, OMG Available Specification Version 2.0
  • Health eDecisions CDS Artifact Sharing, Use Case 1
  • Health Level Seven Arden Syntax for Medical Logic Systems, Version 2.9
  • Expression Logic Harmonization Project Scope Statement -File:Expression Logic Harmonization PSS DRAFT 20130930.doc