This page is part of the Structured Data Capture FHIR IG (v3.0.0-preview: STU 3 Draft) based on FHIR R4. The current version which supercedes this version is 3.0.0. For a full list of available versions, see the Directory of published versions

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Extension: Preferred Terminology Server

Official URL: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-preferredTerminologyServer				Version: 3.0.0-preview
Standards status: Draft			Maturity Level: 0	Computable Name: PreferredTerminologyServer

Indicates the terminology server(s) that are known to be capable of returning and potentially expanding the value set(s) associated with the whole questionnaire or a particular group or question within the questionnaire (depending on where the extension appears). If a full URL is not provided AND the requested query is a terminology operation (e.g. $lookup or $expand) the client SHOULD execute the operation against (one of) the preferredTerminologyServer(s) rather than the local repository.

Not all terminology servers will necessarily have access to the codes. If a questionnaire points to value sets, the rendering engine needs to know where to get a current expansion.

Context of Use

This extension may be used on the following element(s):

• Questionnaire
• Questionnaire.item
• ElementDefinition

Usage info

Usage:

• Use this Extension: Adaptive Questionnaire - search, Advanced Behavior Questionnaire, Extractable Questionnaire - Definition, Extractable Questionnaire - Observation, Extractable Questionnaire - StructureMap, SDC Modular Questionnaire, Populatable Questionnaire - Expression, Populatable Questionnaire - Observation, Populatable Questionnaire - StructureMap, Advanced Rendering Questionnaire, QuestionnaireSearch, SDCBaseQuestionnaire
• Examples for this Extension: MedicationorOtherSubstance

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id	Grade	Path	Details	Requirements
ele-1	error	Extension	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	Extension	Must have either extensions or value[x], not both : extension.exists() != value.exists()
ele-1	error	Extension.extension	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	Extension.extension	Must have either extensions or value[x], not both : extension.exists() != value.exists()
ele-1	error	Extension.value[x]	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())