• Include these codes as defined in http://hl7.org/fhir/questionnaire-item-control version 4.3.0

  Code	Display	Definition
  list	List	Questions within the group should be listed sequentially
  table	Vertical Answer Table	Questions within the group are rows in the table with possible answers as columns. 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.
  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.
  gtable	Group Table	Questions within the group are columns in the table with each group repetition as a row. Used for single-answer questions.
  atable	Answer Table
  header	Header	The group is to be continuously visible at the top of the questionnaire. Header must be a top-level item and must not be marked as repeating, but need not be the first item in the Questionnaire. There can be at most one group of type 'header' in a Questionnaire.
  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.
  group		UI controls relevant to organizing groups of questions
  inline	In-line	Display item is rendered as a paragraph in a sequential position between sibling items (default behavior)
  prompt	Prompt	Text is displayed immediately below or within the answer-entry area of the containing question item (typically as a guide for what to enter). **Deprecation Note** - Use the [[[http://hl7.org/fhir/StructureDefinition/entryFormat]]] extension instead.
  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.
  lower	Lower-bound	Display item is rendered to the left of the set of answer choices or a scaling control for the parent question item to indicate the meaning of the 'lower' bound. E.g. 'Strongly disagree'
  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'
  flyover	Fly-over	Display item is temporarily visible over top of an item if the mouse is positioned over top of the text for the containing item
  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)
  text
  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.
  drop-down	Drop down	A control where an item (or multiple items) can be selected from a list that is only displayed when the user is editing the field. This control is best used for small-to-medium sized lists of options that can reasonably be scanned and selected in a drop-down control. If the list of options is managed by ValueSet, the designer should be confident that the set of codes will both be fully available and appropriately sized. For larger lists, the autocomplete control is more appropriate.
  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).
  lookup	Lookup	A control where editing an item spawns a separate dialog box or screen permitting a user to navigate, filter or otherwise discover an appropriate match. Useful for large choice sets where text matching is not an appropriate discovery mechanism. Such screens must generally be tuned for the specific choice list structure.
  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.
  slider	Slider	A control where an axis is displayed between the high and low values and the control can be visually manipulated to select a value anywhere on the axis.
  spinner	Spinner	A control where a list of numeric or other ordered values can be scrolled through via arrows.
  text-box	Text Box	A control where a user can type in their answer freely.
  question		UI controls relevant to capturing question data

This value set expansion contains 25 concepts.