Value Set Definition Standard Project

A New Normative Standard for Value Set Definitions

Overview

[From the PSS] Describe the elements that make up a “Value Set Definition”, and ballot this as a normative HL7 specification, including a demonstration of how this is met in FHIR profiles and HL7 Model Interchange Format (MIF).

The definition of value sets is a required activity in completing the specification of most health information technology artefacts. To date, the approach for doing so has not been consistent within HL7 constructs and elsewhere. Many of the required elements and approaches are embedded in existing HL7 artefacts but not consistently. Currently, an explicit list of all the fields in an HL7 value set definition are surfaced only in the informative balloted MIF, with a general description of them in the normative Core Principles specification. A more accessible and standardized list of these fields is required to facilitate interoperability and sharing of value set definitions across HL7 artefacts and the Health IT community at large.

Success criteria: Publishing of the normative standard, and a demonstration of value set definitions that conform to this published normative specification.

Project Processes

Conference Call Schedule and Minutes

Weekly meeting to occur Wednesdays 3-4pm ET

No further Friday calls pending call time discussion in San Antonio
WG time slot for discussion is Monday Q2

Remember US ET is now -5 UTC

Phone: +1 770-657-9270, Participant Code: 598745
Webmeeting Info:
Topic: HL7 VSD weekly meeting
Date & Time: Wednesday at 13:00 UTC-07
Duration: 1 hour
To participate, click on the link: https://go.mikogo.com/?sp=HL7vsd&sid=559756147
If the above link does not work, you can follow these steps instead to join a session:
1. Go to http://go.mikogo.com
2. Enter the Session ID: 559-756-147
3. Enter your name
4. Click "Join Session"
5. Enter the Session Password: HL7vsd

===Upcoming Meeting Agenda=== (1/15/14)

1. 10 min: Logistics and key prior discussions
   1. Ted to run meeting
   2. Schedule will change in Jan and beyond. Rob will not be available on Thursdays or Fridays.
      1. Last meeting until San Antonio WG meeting. Only meeting on Wed. from now on.
      2. VSD discussion to occur Monday Q2
   3. Additions to agenda?
2. Completed:
   1. We completed the review of the Logical Elements/Functions to define Content Logical Definition based on the MIF
      1. See Valueset MIF ContentDefinition for updated comments.
   2. Discussion on how to control use of DYNAMIC defined value sets continued on 12/20 meeting.
      1. Rob and Lloyd still have to create document and use cases to explain approach to "STATUS" / DYNAMIC stability.
   3. Metadata sheet review now complete
      1. Completed discussion of Value Set Expansion metadata with changes added to end of spreadsheet.
         1. A Value Set Definition can reference 0..* "Trusted Value Set Expansion Reference" that can be a service or an actual expansion
         2. An Expansion can be characterized by a date (required), a time (optional) and an identifier (optional)
      2. Folks should continue to review current value set metadata document but we will come back to this once Content Logical Definition function review is complete. [1]
3. 45 min: Content work
   1. Review Documents that have been prepared for the WG meeting:
      1. Annotated listing of the Content Logical Definition functions as based on the MIF
      2. Overall outline of draft of the ballot
      3. If time, review the last changes to metadata list on Value_Set_Metadata spreadsheet
   2. Need to plan an entire meeting on constraints/approach for allowing expressions as members of a value set. May give some time to WG discussion but limited....

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Minutes documents:

20131016_VSD_Minutes
20131022_VSD_Minutes
20131030_VSD_Minutes
20131106_VSD_Minutes
20131113_VSD_Minutes
20131120_VSD_Minutes
20131122_VSD_Minutes
20131127_VSD_Minutes
20131129_VSD_Minutes
20131204_VSD_Minutes
20131206_VSD_Minutes
20131211_VSD_Minutes
20131213_VSD_Minutes
20131218_VSD_Minutes
20131220_VSD_Minutes
20140103_VSD_Minutes
20140108_VSD_Minutes

Key Target Dates

Now targeting May 2014 ballot submission
Feb. 2014 - intention to ballot

Project Documents

The project working documents are being maintained using Google Docs. These can be found at: Links to project documents