XMLTechnical Committee
(Formerly SGML/XML)

new2.gif (147 bytes)Mission Statement/Charter  |  Meeting Minutes 
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Current Patient Record Architecture Draft (PRA)

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Patient Record Architecture
New Posting CDA Membership Ballot Package: August 4, 2000.
(new) PRA RENAMED to "Clinical Document Architecture" (CDA).
Click on the link to download all the materials in zip format.
XML  & PRA Introductory Sessions for Cleveland Spring Working Group Meeting. (05/22/2000)
The SIG is presenting two introductory sessions at the Cleveland Plenary.   Here are the materials for the introduction to XML, Paul V. Biron and Sandy Boyer, instructors, and here are the materials for the introduction to HL7's XML patient Record Architecture, Sandy Boyer and Liora Alschuler, instructors.
Patient Record Architecture (PRA) Presentation to the TSC. (9/28/99)
Click here to download all or some of the materials presented to the Technical Steering Committee in support of proceeding with a ballot on the HL7 Patient Record Architecture.
PRA Early Implementor's Page
This page contains a short summary of current XML clinical document projects by vendors and providers as well as links to samples of documents, DTDs and longer project descriptions.
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  Co-Chairs: Liora Alschuler
The Word Electric
Phone: (802) 785-2623
Email: liora@the-word-electric.com

Paul Biron
Kaiser Permanente
Phone: 626.685-3529 Fax: 626.685-3568
Email: paul.v.biron@kp.org

Bob Dolin, MD
Kaiser Pemanente
Phone: 714.562.3456
Email: robert.h.dolin@kp.org

Rachael Sokolowski
Magnolia Technologies
Phone: 781.646.8877 • Fax: 781.646.5377
Email: rsokolowski@magnoliatech.com

Sample Document Type Definitions Up to the Top

These DTDs are provided for educational purpose only at this time. They have been contributed by various individuals, and do not represent draft or preliminary standards being proposed by the HL7 SGML/XML SIG.

If you have trouble viewing these DTD's in your web browser, try using your browser's "Save Link As..." feature to save a copy of the DTD to you local drive, then view it using a standard text editor (such as NotePad)

BulletPrescriptions from Kurzweil Applied Intelligence
Bullet Policy & Procedures from Kaiser Permanente, Southern Calif

Links to Other SGML/XML Sites Up to the Top

Bullet The Annotated XML Specification
Bullet XML FAQ
Bullet Robin Cover's SGML Web Page
Bullet OASIC (SGML Open): The Organization for Structured Information Standards
Bullet XML/EDI - Using XML for Electronic Data Interchange

SGML/XML SIG White Papers and DraftsUp to the Top

Bullet PRA Tutorial   This web page contains links to the tutorial powerpoint slides plus all handouts and related material used in the April 27 tutorial.

  Bullet The HL7 Patient Record Architecture (PRA) Proposal. The HL7 Patient Record Proposal describes a method in which electronic healthcare records (EHR) can be created, exchanged, and processed using XML. This draft is the product of the Kona Editorial Group (KEG) under charter from the HL7 SGML/XML SIG. It was originally presented at the 1998 Plenary meeting in San Diego (see 9/98 PRA.) Linked documents include the current draft of the Level One architectural DTD and the header DTD. A ballot proposal package will be presented to the SIG and, if approved, to the TSC at the 1999 plenary meeting in Atlanta.

NOTE: The PRA framework document was last updated on August 3, 1999. This document and the related DTDs will continue to undergo frequent revision between now and the plenary sessions. Portions of this document have been reviewed by the KEG and represent KEG concensus; other portions, specifically the Part II, Header and articulation of goals for Levels 2 & 3 have not undergone the full KEG concensus process.  Nevertheless, this document represents considerable refinement over previous drafts.

  BulletThe Kona Architecture Proposal. [This proposal is outdated. A draft of the first part of a newer version is now known as the HL7 Patient Record Proposal]. The Kona Proposal describes a method in which electronic healthcare records (EHR) can be created, exchanged, and processed using SGML, Standard Generalized Markup Language, ISO 8879:1986.
Merging OO Design and SGML/XML Architectures (June '98) A DRAFT document which describes a formal method for mapping the RIM to SGML/XML and links to the RIM converted to SGML and automated tools for derivation and validation of doctypes (DTDs) from the RIM

Selected References Up to the Top

BulletBasic SGML. An introduction. Anyone who knows a little about tagging (such as minimal HTML concepts) should find this to be an easy introduction.
BulletA Gentle Introduction to SGML. A very nice 24-page introduction to the technical aspects of SGML, prepared by the Text Encoding Initiative. Has enough content to allow one to learn to create DTDs and associated documents.

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The HL7 XML TC is a Technical Committee of HL7 formed to create standards for the use of markup languages, such as XML, in all domains of health care. The XML standards will comply with the W3C XML 1.0 Recommendation and will be in conformance with the HL7 RIM. Participation is open to all parties.


  1. Our Mission statement will guide the primary objectives:
  2. To create and coordinate the development of a comprehensive document architecture for health care.
  3. To educate the healthcare community in the capabilities and utility of XML-based information.
  4. To develop, coordinate, and maintain a framework for interoperable Document Type Definitions (DTDs) and XML Schemas for use in health care and health care standards including HL7.
  5. To coordinate and cooperate with other XML initiatives where appropriate.
  6. To enable and promote the use of these standards and to make the standard as widely available as possible.
  7. To represent healthcare in XML standards activities/evolution.
  8. To promote longevity of all information encoded according to these guidelines.
  9. To ensure that the document architecture standards comply with and be in conformance with HL7.