Stream: implementers
Topic: Extensible
Ankita Srivastava (Sep 15 2020 at 05:17):
Hello @Lloyd McKenzie, I came across one of ppt shared by you (https://www.slideshare.net/DevDays2014/terminology-valuesets-codesystems-by-lloyd-mckenzie?from_action=save) and have query regarding same. In Binding Extensibility Slide, it is mentioned that - "set of codes is incomplete and you may use additional code". Does it still applies on Extensible Binding (R4)? Request your guidance on same.
Yunwei Wang (Sep 15 2020 at 14:33):
Check is section: http://build.fhir.org/terminologies.html#extensible
Ankita Srivastava (Sep 15 2020 at 14:45):
Thank you @Yunwei Wang for the response. I have gone through this link but still had doubt regarding it. So wanted to cross check with Lloyd McKenzie
Yunwei Wang (Sep 15 2020 at 14:54):
The 3rd paragraph states that "If there is no applicable concept in value set (based on human review), an alternate concept (either system/code pair, or text) may be used instead. The alternate concept can have any level of specificity in an is-a hierarchy (see Condition instance #2)."
Lloyd McKenzie (Sep 15 2020 at 14:54):
@Yunwei Wang is correct
Ankita Srivastava (Sep 16 2020 at 03:46):
Thank You very much @Yunwei Wang and @Lloyd McKenzie for the explanation.
Robert McClure (Sep 16 2020 at 17:32):
BTW, keep in mind that while this is not usually checked, but when you extend a value set, you do so by, at least in an abstract way, creating a new value set that has the existing concepts bound in the spec and add in your "extension" concepts (they would be in the compose) and those additional concepts will need to come from a code system (some other external one, or one you have created) because you'll need to include that code system when using the extension concept.
Ankita Srivastava (Sep 17 2020 at 02:10):
Thank You @Robert McClure for the guidance. I will surely keep these things in mind while implementation.
Last updated: Apr 12 2022 at 19:14 UTC
