• Include these codes as defined in http://hl7.org/fhir/questionnaire-item-control version 4.0.1

  Code	Display	Definition
  list	List	Questions within the group should be listed sequentially
  htable	Horizontal Answer Table	Questions within the group are columns in the table with possible answers as rows. Used for 'choice' questions. The questions within a group marked with this controlType SHALL provide an enumerated list of options and SHOULD refer to the same set of options, same value set or same expression. In the case of a 'sparse' table where some options aren't available for some questions, the order of the answers in the table is not defined and some rendering tools may refuse to display the group as a table.
  atable	Answer Table
  footer	Footer	The group is to be continuously visible at the bottom of the questionnaire. Footer must be a top-level item and must not be marked as repeating, but need not be the last item in a Questionnaire. There can be at most one group of type 'header' in a Questionnaire.
  inline	In-line	Display item is rendered as a paragraph in a sequential position between sibling items (default behavior)
  unit	Unit	Display item is rendered adjacent (horizontally or vertically) to the answer space for the parent question, typically to indicate a unit of measure. **Deprecation Note** - The display element of the [[[http://hl7.org/fhir/StructureDefinition/questionnaire-unit]]] should be used instead.
  upper	Upper-bound	Display item is rendered to the right of the set of answer choices or a scaling control for the parent question item to indicate the meaning of the 'upper' bound. E.g. 'Strongly agree'
  help	Help-Button	Display item is rendered in a dialog box or similar control if invoked by pushing a button or some other UI-appropriate action to request 'help' for a question, group or the questionnaire as a whole (depending what the display item is nested within)
  autocomplete	Auto-complete	A control which provides a list of potential matches based on text entered into a control. Used for large choice sets where text-matching is an appropriate discovery mechanism.
  check-box	Check-box	A control where choices are listed with a box beside them. The box can be toggled to select or de-select a given choice. Multiple selections may be possible. Commonly useful for repeating items of type constrained by answerOption, answerValueset or answerExpression, however can also be used for boolean (if the checkbox is a 3-state control that allows 'unanswered' as a possibility).
  radio-button	Radio Button	A control where choices are listed with a button beside them. The button can be toggled to select or de-select a given choice. Selecting one item deselects all others. Used for non-repeating items with 'closed' answerOption, answerValueset or answerExpression constraints. Can also be used for boolean so long as there is a button for 'unanswered' or it's possible to deselect all items.
  spinner	Spinner	A control where a list of numeric or other ordered values can be scrolled through via arrows.
  question		UI controls relevant to capturing question data

This value set expansion contains 13 concepts.