FHIR Chat · duplicate ways to score

Stream: questionnaire

Topic: duplicate ways to score

Eric Haas (Jun 13 2018 at 20:40):

Would it be possible to shrink a single extension for scoring both questionnaire items, choices and valuesets? currently there are two.

"Many questionnaires involve computations on questionnaire answers, e.g. tabulating scores. To help with associating numeric values to coded answers, there are two extensions defined - one for defining the numeric weighting of a code defined in a value set - valueset-ordinalValue and the other for defining a code that can appear within a Coding itself - iso21090-CO-value."

Can we pick one and expand its context?

Grahame Grieve (Jun 13 2018 at 21:56):

do they have the same type?

Eric Haas (Jun 13 2018 at 23:14):

Yes...

extension       0..1    decimal URL = http://hl7.org/fhir/StructureDefinition/iso21090-CO-value
CO-value: A numerical value associated with the coded ordinal value.


Use on Element ID Coding

extension       0..1    decimal URL = http://hl7.org/fhir/StructureDefinition/valueset-ordinalValue
ordinalValue: A numeric value that allows the comparison (less than, greater than) or other numerical manipulation of a concept (e.g. Adding up components of a score).


Use on Element ID ValueSet.compose.include.concept or Element ID ValueSet.expansion.contains

Grahame Grieve (Jun 13 2018 at 23:15):

looks like they should be the same to me. make a task?

Eric Haas (Jun 13 2018 at 23:19):

GF#17350 assigned to Vocab?

Grahame Grieve (Jun 13 2018 at 23:23):

I think that one is FHIR-I

Eric Haas (Jun 13 2018 at 23:24):

K changed

Lloyd McKenzie (Jun 14 2018 at 00:40):

It's both - The 21090 one is owned by vocab and the Questionnaire one is owned by FHIR-I. The only reason I didn't make them the same was because of the former one's tie to the CD data type. The latter one applies to a whole bunch of data types, though only in the context of Questionnaire.

Grahame Grieve (Jun 14 2018 at 00:54):

I moved to block vote to make the change. Unless vocab disagrees @Rob Hausam

Rob Hausam (Jun 14 2018 at 01:02):

I think Vocab would agree - but we can put it on the agenda for tomorrow and ask.

Grahame Grieve (Jun 14 2018 at 20:49):

updated GF#17350 after discussion in vocab:
Remove these 3 extensions:

and replace with the the single extension http://hl7.org/fhir/StructureDefinition/iso21090-CO-value (and update it's definition to allow this context)

Paul Lynch (May 21 2019 at 20:14):

I am just now running into an issue with this change. Did http://hl7.org/fhir/StructureDefinition/iso21090-CO-value later get replaced by http://hl7.org/fhir/StructureDefinition/ordinalValue? The new "ordinalValue" extension does not mention ValueSet.expansion.contains in its "Context of use" section. Is that just an oversight, or is that use disallowed?