A code that identifies the questionnaire as falling into a particular group of like questionnaires; e.g. "Pediatric", "Admissions", "Research", "Demographic", "Opinion Survey", etc.

A label for a particular group or question within the questionnaire.

The minimum number of times the group must appear or the minimum number of answers for a question - when greater than 1.

The maximum number of times the group must appear or the minimum number of answers for a question - when greater than 1 and not unlimited.

If true, indicates that the extended item should not be displayed to the user.

If present, indicates that the item containing the extension should only be enabled (displayed/allow answers to be captured) when the specified condition is true.

The type of data entry control or structure that should be used to render the item.

Identifies the desired orientation when rendering a list of choices (typically radio-box or check-box lists).

This is the value that should be pre-populated when rendering the questionnaire for user input.

If true, the value cannot be changed by a human respondent to the Questionnaire.

A reference to the Data Element that corresponds to the question text and answer constraints for this question.

Identifies a map that links the questionnaire (source) to a DataElement server and identifies which questions correspond to which data elements (by linkId and local identifier, respectively).

Where the type for a question is "Reference", indicates a type of resource that is permitted.

Identifies a filter to apply when looking up candidate answers for the question.

Describes the intended purpose of the rendered text. For example - instructions, guidance on access control, maintenance information, etc.

The maximum number of characters that must be present in the simple data type to be considered a "valid" instance.

For questionnaires generated from FHIR profiles, indicates the FHIR data type or resource type that corresponds to this node.