Welcome & Apologies
JCA welcomed everyone.
Conflicts of Interest/Approval of minutes
None that were new. Approval of minutes put off until next call.
Updates on previous issues
JCA briefed the group on slashes in FSNs, use of URLs in definitions (see slide to the right).
JCA said DOIs are persistent even if URLs change, so will use those instead of URLs. There will be a note in the Editorial Guide on how to find them. ISBN is another unique, persistent standard for representation that the organization can use.
JCA said the intent is not to use this as the sole source of a definition, but rather as a reference so that people could go to the source of the definition. Currently, he said, there was a text definition with no source, so this provided a way to point to the source.
JCA said he had a note to figure out what to do if the source is no longer available.
IGR said there needed to be some guidance written up on GMDN terms for the linkage table. He said there was a proposal underlying concept model for devices that would assist with definitions of the content. There would still be some need for some text definitions. But this would be discussed with the Members. He confirmed that there was an action item to come up with some Editorial Guidance for naming GMDN devices.
TMO noted that slashes were prevalent in the product hierarchy too.
Review of drugs, products and substances
TMO showed some slides.
Substances
TMO said approximately 100 concepts representing role had been retired from the Substance Hierarchy because they were showing erroneous relationships and presenting other problems.
The activation of the new Authoring Tool meant that it was hard to retire concepts so some of that had been postponed until the July 2016 Release.
LOINC had been doing some interesting QA of substances, so that was providing some clean-up work.
Drug Model
TMO said the RFPs were published on the web and had passed the close date. IGR said it was a 2-week turn around.
Drug Content
TMO showed the slide to the right (and other slides that are not shown).
She said product strength involved a high level plan to move concepts into a new module. The team was also working with IHTSDO Technical Services to do some of the work in batches.
Changes in content would begin in development branch May 2016. There would be intermittent previews for review and comment supported by the new authoring tool and terminology server. January 2017 would be the release of an updated hierarchy.
Devices
TMO said the team had been working on migration of the linkage table maintenance to the Mapping Tool. It was receiving and processing monthly updates from GMDN, used to be twice a year and there was a significant lag in seeing it in a SNOMED CT Release.
Domain Range Changes
TMO said currently did not use SCT as attribute values to define concepts in other hierarchies, and they looked into whether they could do that and why the decision had been made. It had been an intentional decision in 2009 because there was no use case, but the situation had changed. She gave an example of vaccines adverse reaction. She described two different scenarios on a way forward (see slide to the right).
JCA asked if Option 4 should be reconsidered.
There was a discussion of using algorithms to handle the changes that would be needed.
- JCA said the action would be to talk with Yongsheng Gao on his view on the impact of both of the laterality options on the anatomy model.