# description
Distinguishes groups from questions and display text and indicates data type for questions.

# property[].description
Indicates that the code is abstract - only intended to be used as a selector for other concepts

# concept[].definition
An item with no direct answer but should have at least one child item.

# concept[].definition
Text for display that will not capture an answer or have child items.

# concept[].definition
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).

# concept[].concept[].definition
Question with a yes/no answer (valueBoolean).

# concept[].concept[].definition
Question with is a real number answer (valueDecimal).

# concept[].concept[].definition
Question with an integer answer (valueInteger).

# concept[].concept[].definition
Question with a date answer (valueDate).

# concept[].concept[].definition
Question with a date and time answer (valueDateTime).

# concept[].concept[].definition
Question with a time (hour:minute:second) answer independent of date. (valueTime).

# concept[].concept[].definition
Question with a short (few words to short sentence) free-text entry answer (valueString).

# concept[].concept[].definition
Question with a long (potentially multi-paragraph) free-text entry answer (valueString).

# concept[].concept[].definition
Question with a URL (website, FTP site, etc.) answer (valueUri).

# concept[].concept[].definition
Question with a Coding drawn from a list of possible answers (specified in either the answerOption property, or via the valueset referenced in the answerValueSet property) as an answer (valueCoding).

# concept[].concept[].definition
Answer is a Coding drawn from a list of possible answers (as with the choice type) or a free-text entry in a string (valueCoding or valueString).

# concept[].concept[].definition
Question with binary content such as an image, PDF, etc. as an answer (valueAttachment).

# concept[].concept[].definition
Question with a reference to another resource (practitioner, organization, etc.) as an answer (valueReference).

# concept[].concept[].definition
Question with a combination of a numeric value and unit, potentially with a comparator (<, >, etc.) as an answer. (valueQuantity) There is an extension 'http://hl7.org/fhir/StructureDefinition/questionnaire-unit' that can be used to define what unit should be captured (or the unit that has a ucum conversion from the provided unit).