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1/25/99© 1998,1999 Health Level 71 Introduction to HL7 Version 3 W. Ted Klein Senior Scientist, McKesson HBOC HL7 Modeling and Methodology Technical Committee.

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Presentation on theme: "1/25/99© 1998,1999 Health Level 71 Introduction to HL7 Version 3 W. Ted Klein Senior Scientist, McKesson HBOC HL7 Modeling and Methodology Technical Committee."— Presentation transcript:

1 1/25/99© 1998,1999 Health Level 71 Introduction to HL7 Version 3 W. Ted Klein Senior Scientist, McKesson HBOC HL7 Modeling and Methodology Technical Committee Co-Chair HL7

2 1/25/99© 1998,1999 Health Level 72 What Is HL7? The HL7 organization was founded in 1987 In June 1994 HL7 was designated as an ANSI accredited standards development organization (SDO)

3 1/25/99© 1998,1999 Health Level 73 HL7 Mission Statement To provide standards for the exchange, management and integration of data that supports clinical patient care and the management, delivery and evaluation of healthcare services.... the complete ‘life cycle’ of a standards specification -- development, adoption, market recognition, utilization and adherence.

4 1/25/99© 1998,1999 Health Level 74 V3.0 Standard Development Participants Executive Committee Business Strategy & Motivation M&M Methodology, Measurement, Coordination Technical Committees Modeling & Voting Technical Steering Committee Planning & Enforcement Why? How? What? When?

5 1/25/99© 1998,1999 Health Level 75 HL7 Standard Versions 2.0 (1988)Prototype 2.1 (1990)First standard 2.2 (1994)In operation 2.3 (1997)Current ANSI standard2.3 (1997)Current ANSI standard (1998)Currently in ballot 3.0 (1999)Substantial change in process (introduction of formal methods)

6 1/25/99© 1998,1999 Health Level 76 A domain-specific, common protocol for the exchange of health care information. ISO-OSI Communication Architecture Model 1Physical 2Data Link 3Network 4Transport CommunicationCommunication 5Session 6Presentation 7Application FunctionFunction What does “HL7” stand for?

7 1/25/99© 1998,1999 Health Level 77 Business Problem change Yesterday, change was a by-product of business. change Today, business is a buy-product of change.

8 1/25/99© 1998,1999 Health Level 78 Business Realities Accelerating pace of business change - rapid shifting of requirements demands increased IS responsiveness Increasing IS complexity - constant evolution of new technologies (e.g., client/server, Internet, multimedia) Increasing competition - demands to reduce time-to-market while decreasing costs and improving quality

9 1/25/99© 1998,1999 Health Level 79 Market Reform Socialized Medicine Present time Clinton’s Reform Initial Fee-for-service, on-demand Initial Managing Visit Transitional Capitated, case-based Transitional ManagingCareManagingCare Anticipated Preventive, episodal Anticipated ManagingHealthManagingHealth Accelerating Pace of Business Change Migration Towards a Wellness Model

10 1/25/99© 1998,1999 Health Level 710 Digital IBM Centralized Computing (Batch) Network Computing (RPC) Enterprise Computing (Client/Server) HP Micron Dell Increased IS Complexity Client/Server, Internet, Multimedia

11 1/25/99© 1998,1999 Health Level 711 An HL7 Version 2.X Spec Common Specs Chapter- Specific Specs Chapters 2 and 8 Chapters 3, 4, 6,... Trigger Event and Messages Segments and Fields


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