QuestionnaireItemType

Distinguishes groups from questions and display text and indicates data type for questions

This code system http://hl7.org/fhir/item-type defines the following codes:

Lvl	Code	Display	Definition
1	group	Group	An item with no direct answer but which has descendant items that are questions
1	display	Display	Text for display that will not capture an answer or have descendants
1	question	Question	An item that defines a specific answer to be captured (and may have descendant items)
2	boolean	Boolean	Question with a yes/no answer
2	decimal	Decimal	Question with is a real number answer
2	integer	Integer	Question with an integer answer
2	date	Date	Question with adate answer
2	dateTime	Date Time	Question with a date and time answer
2	instant	Instant	Question with a system timestamp answer
2	time	Time	Question with a time (hour/minute/second) answer independent of date.
2	string	String	Question with a short (few words to short sentence) free-text entry answer
2	text	Text	Question with a long (potentially multi-paragraph) free-text entry (still captured as a string) answer
2	url	Url	Question with a url (website, FTP site, etc.) answer
2	choice	Choice	Question with a Coding drawn from a list of options as an answer
2	open-choice	Open Choice	Answer is a Coding drawn from a list of options or a free-text entry captured as Coding.display
2	attachment	Attachment	Question with binary content such as a image, PDF, etc. as an answer
2	reference	Reference	Question with a reference to another resource (practitioner, organization, etc.) as an answer
2	quantity	Quantity	Question with a combination of a numeric value and unit, potentially with a comparator (<, >, etc.) as an answer.