4.4.1.632 ValueSet http://hl7.org/fhir/ValueSet/item-type

An item with no direct answer but should have at least one child item.

Text for display that will not capture an answer or have child items.

An item that defines a specific answer to be captured, and which may have child items. (the answer provided in the QuestionnaireResponse should be of the defined datatype).

Question with a yes/no answer (valueBoolean).

Question with is a real number answer (valueDecimal). There is an extension 'http://hl7.org/fhir/StructureDefinition/questionnaire-unit' that can be used to computably convey the unit of measure associated with the answer for use when performing data extraction to an element of type Quantity.

Question with an integer answer (valueInteger). There is an extension 'http://hl7.org/fhir/StructureDefinition/questionnaire-unit' that can be used to computably convey the unit of measure associated with the answer for use when performing data extraction to an element of type Quantity.

Question with a date answer (valueDate).

Question with a date and time answer (valueDateTime).

Question with a time (hour:minute:second) answer independent of date. (valueTime).

Question with a short (few words to short sentence) free-text entry answer (valueString). Strings SHOULD NOT contain carriage return or newline characters. If multi-line answers are needed, use the 'text' type.

Question with a long (potentially multi-paragraph) free-text entry answer (valueString).

Question with a URL (website, FTP site, etc.) answer (valueUri).

Question with a Coding - generally drawn from a list of possible answers (valueCoding)

Question with binary content such as an image, PDF, etc. as an answer (valueAttachment).

Question with a reference to another resource (practitioner, organization, etc.) as an answer (valueReference).

Question with a combination of a numeric value and unit as an answer. (valueSimpleQuantity) There are two extensions ('http://hl7.org/fhir/StructureDefinition/questionnaire-unitOption' and 'http://hl7.org/fhir/StructureDefinition/questionnaire-unitValueSet') that can be used to define what unit should be selected for the Quantity.code and Quantity.system.