Release 5 Draft Ballot

This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions Code System

FHIR Infrastructure Work Group Maturity Level: 3Trial Use Use Context: Any

This is a code system defined by the FHIR project.


Defining URL:

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

Committee:FHIR Infrastructure Work Group
OID:2.16.840.1.113883.4.642.1.445 (for OID based terminology systems)
Source ResourceXML / JSON

This Code system is used in the following value sets:

  • ValueSet: QuestionnaireItemType (Distinguishes groups from questions and display text and indicates data type for questions.)


notSelectable that the code is abstract - only intended to be used as a selector for other concepts

This code system defines the following codes:

LvlCodeDisplayDefinitionNot Selectable
1group GroupAn item with no direct answer but should have at least one child item.
1display DisplayText for display that will not capture an answer or have child items.
1question QuestionAn 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).true
2  boolean BooleanQuestion with a yes/no answer (valueBoolean).
2  decimal DecimalQuestion with is a real number answer (valueDecimal).
2  integer IntegerQuestion with an integer answer (valueInteger).
2  date DateQuestion with a date answer (valueDate).
2  dateTime Date TimeQuestion with a date and time answer (valueDateTime).
2  time TimeQuestion with a time (hour:minute:second) answer independent of date. (valueTime).
2  string StringQuestion with a short (few words to short sentence) free-text entry answer (valueString).
2  text TextQuestion with a long (potentially multi-paragraph) free-text entry answer (valueString).
2  url UrlQuestion with a URL (website, FTP site, etc.) answer (valueUri).
2  coding CodingQuestion with a Coding - generally drawn from a list of possible answers (valueCoding)
2  attachment AttachmentQuestion with binary content such as an image, PDF, etc. as an answer (valueAttachment).
2  reference ReferenceQuestion with a reference to another resource (practitioner, organization, etc.) as an answer (valueReference).
2  quantity QuantityQuestion with a combination of a numeric value and unit, potentially with a comparator (<, >, etc.) as an answer. (valueQuantity) There is an extension '' that can be used to define what unit should be captured (or the unit that has a ucum conversion from the provided unit).


See the full registry of code systems defined as part of FHIR.

Explanation of the columns that may appear on this page:

LevelA few code lists that FHIR defines are hierarchical - each code is assigned a level. See Code System for further information.
SourceThe source of the definition of the code (when the value set draws in codes defined elsewhere)
CodeThe code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
DisplayThe display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
DefinitionAn explanation of the meaning of the concept
CommentsAdditional notes about how to use the code