HL7 Terminology (THO)
3.1.0 - Publication International flag

This page is part of the HL7 Terminology (v3.1.0: Release) based on FHIR R4. The current version which supercedes this version is 5.2.0. For a full list of available versions, see the Directory of published versions

ValueSet: Yes No Unknown NotAsked

Official URL: http://terminology.hl7.org/ValueSet/yes-no-unknown-not-asked Version: 1.0.0
Active as of 2020-06-17 Responsible: HL7 International Computable Name: YesNoUnknownNotAsked

This value set contains 4 concepts commonly used as answers to items in a questionnaire.


This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

Logical Definition (CLD)



This value set contains 4 concepts

Expansion based on expandedYes-NoIndicator v2.1.0 (CodeSystem)

All codes in this table are from the system http://terminology.hl7.org/CodeSystem/v2-0532

ASKUUnknownasked but unknown
NASKNot Askednot asked

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance)
Display The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code


2020-11-13createDaVinci - Documentation Requirement Lookup Service (DRLSCarmela A. CoudercNew Value Set; integrate with current content and implemebt UP-71