Name	Flags	Card.	Type	Description & Constraints
Questionnaire	I		DomainResource	A structured set of questions If root group must be "required" The link ids for groups and questions must be unique within the questionnaire
identifier	Σ	0..*	Identifier	External identifiers for this questionnaire
version	Σ	0..1	string	Logical identifier for this version of Questionnaire
status	?! Σ	1..1	code	draft | published | retired QuestionnaireStatus (Required)
date	Σ	0..1	dateTime	Date this version was authored
publisher	Σ	0..1	string	Organization/individual who designed the questionnaire
telecom	Σ	0..*	ContactPoint	Contact information of the publisher
subjectType	Σ	0..*	code	Resource that can be subject of QuestionnaireResponse ResourceType (Required)
group	Σ I	1..1	BackboneElement	Grouped questions Groups may either contain questions or groups but not both
linkId		0..1	string	To link questionnaire with questionnaire response
title	Σ	0..1	string	Name to be displayed for group
concept	Σ	0..*	Coding	Concept that represents this section in a questionnaire Questionnaire Question Codes (Example)
text		0..1	string	Additional text for the group
required		0..1	boolean	Whether the group must be included in data results
repeats		0..1	boolean	Whether the group may repeat
group	I	0..*	see group	Nested questionnaire group
question	I	0..*	BackboneElement	Questions in this group A question must use either option or options, not both
linkId		0..1	string	To link questionnaire with questionnaire response
concept		0..*	Coding	Concept that represents this question on a questionnaire Questionnaire Question Codes (Example)
text		0..1	string	Text of the question as it is shown to the user
type		0..1	code	boolean | decimal | integer | date | dateTime + AnswerFormat (Required)
required		0..1	boolean	Whether the question must be answered in data results
repeats		0..1	boolean	Whether the question can have multiple answers
options	I	0..1	Reference(ValueSet)	Valueset containing permitted answers
option	I	0..*	Coding	Permitted answer Questionnaire Answer Codes (Example)
group		0..*	see group	Nested questionnaire group
Documentation for this format