> ## Documentation Index > Fetch the complete documentation index at: https://docs.metriport.com/llms.txt > Use this file to discover all available pages before exploring further. # Questionnaire > A structured set of questions intended to guide the collection of answers from end-users. Questionnaires provide detailed control over order, presentation, phraseology and grouping to allow coherent, consistent data collection. ## Properties | Name | Required | Type | Description | | ------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------- | | url | No | uri | Canonical identifier for this questionnaire, represented as a URI (globally unique) | | identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | Additional identifier for the questionnaire | | version | No | string | Business version of the questionnaire | | name | No | string | Name for this questionnaire (computer friendly) | | title | No | string | Name for this questionnaire (human friendly) | | derivedFrom | No | canonical\[] | Instantiates protocol or definition | | status | Yes | code | draft / active / retired / unknown | | experimental | No | boolean | For testing purposes, not real usage | | subjectType | No | code\[] | Resource that can be subject of QuestionnaireResponse | | date | No | dateTime | Date last changed | | publisher | No | string | Name of the publisher (organization or individual) | | contact | No | [ContactDetail](/medical-api/fhir/data-types/contactdetail)\[] | Contact details for the publisher | | description | No | markdown | Natural language description of the questionnaire | | useContext | No | [UsageContext](/medical-api/fhir/data-types/usagecontext)\[] | The context that the content is intended to support | | jurisdiction | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Intended jurisdiction for questionnaire (if applicable) | | purpose | No | markdown | Why this questionnaire is defined | | copyright | No | markdown | Use and/or publishing restrictions | | approvalDate | No | date | When the questionnaire was approved by publisher | | lastReviewDate | No | date | When the questionnaire was last reviewed | | effectivePeriod | No | [Period](/medical-api/fhir/data-types/period) | When the questionnaire is expected to be used | | code | No | [Coding](/medical-api/fhir/data-types/coding)\[] | Concept that represents the overall questionnaire | | item | No | QuestionnaireItem | Questions and sections within the Questionnaire | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - linkId | Yes | string | Unique id for item in questionnaire | | - definition | No | uri | ElementDefinition - details for the item | | - code | No | [Coding](/medical-api/fhir/data-types/coding)\[] | Corresponding concept for this item in a terminology | | - prefix | No | string | E.g. "1(a)", "2.5.3" | | - text | No | string | Primary text for the item | | - type | Yes | code | group / display / boolean / decimal / integer / date / dateTime + | | - enableWhen | No | QuestionnaireItemEnableWhen | Only allow data when | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - question | Yes | string | Question that determines whether item is enabled | | - operator | Yes | code | exists / = / != / > / \< / >= / \<= | | - answer\[x] | Yes | boolean, decimal, integer, date, dateTime, time, string, [Coding](/medical-api/fhir/data-types/coding), [Quantity](/medical-api/fhir/data-types/quantity), Reference\ | Value for question comparison based on operator | | - enableBehavior | No | code | all / any | | - required | No | boolean | Whether the item must be included in data results | | - repeats | No | boolean | Whether the item may repeat | | - readOnly | No | boolean | Don't allow human editing | | - maxLength | No | integer | No more than this many characters | | - answerValueSet | No | canonical | Valueset containing permitted answers | | - answerOption | No | QuestionnaireItemAnswerOption | Permitted answer | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - value\[x] | Yes | integer, date, time, string, [Coding](/medical-api/fhir/data-types/coding), Reference\ | Answer value | | - initialSelected | No | boolean | Whether option is selected by default | | - initial | No | QuestionnaireItemInitial | Initial value(s) when item is first rendered | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - value\[x] | Yes | boolean, decimal, integer, date, dateTime, time, string, uri, [Attachment](/medical-api/fhir/data-types/attachment), [Coding](/medical-api/fhir/data-types/coding), [Quantity](/medical-api/fhir/data-types/quantity), Reference\ | Actual value for initializing the question | | - item | No | \[] | Nested questionnaire items | ## Search Parameters | Name | Type | Description | Expression | | --------------------- | --------- | ----------------------------------------------------------------------------------- | ------------------------------ | | code | token | A code that corresponds to one of its items in the questionnaire | Questionnaire.item.code | | context | token | A use context assigned to the questionnaire | Questionnaire.useContext.value | | context-quantity | quantity | A quantity- or range-valued use context assigned to the questionnaire | Questionnaire.useContext.value | | context-type | token | A type of use context assigned to the questionnaire | Questionnaire.useContext.code | | date | date | The questionnaire publication date | Questionnaire.date | | definition | uri | ElementDefinition - details for the item | Questionnaire.item.definition | | description | string | The description of the questionnaire | Questionnaire.description | | effective | date | The time during which the questionnaire is intended to be in use | Questionnaire.effectivePeriod | | identifier | token | External identifier for the questionnaire | Questionnaire.identifier | | jurisdiction | token | Intended jurisdiction for the questionnaire | Questionnaire.jurisdiction | | name | string | Computationally friendly name of the questionnaire | Questionnaire.name | | publisher | string | Name of the publisher of the questionnaire | Questionnaire.publisher | | status | token | The current status of the questionnaire | Questionnaire.status | | subject-type | token | Resource that can be subject of QuestionnaireResponse | Questionnaire.subjectType | | title | string | The human-friendly name of the questionnaire | Questionnaire.title | | url | uri | The uri that identifies the questionnaire | Questionnaire.url | | version | token | The business version of the questionnaire | Questionnaire.version | | context-type-quantity | composite | A use context type and quantity- or range-based value assigned to the questionnaire | Questionnaire.useContext | | context-type-value | composite | A use context type and value assigned to the questionnaire | Questionnaire.useContext | ## Inherited Properties | Name | Required | Type | Description | | ----------------- | -------- | ------------------------------------------------------ | ------------------------------------------------------ | | id | No | string | Logical id of this artifact | | meta | No | [Meta](/medical-api/fhir/data-types/meta) | Metadata about the resource | | implicitRules | No | uri | A set of rules under which this content was created | | language | No | code | Language of the resource content | | text | No | [Narrative](/medical-api/fhir/data-types/narrative) | Text summary of the resource, for human interpretation | | contained | No | Resource\[] | Contained, inline Resources | | extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored | To view the FHIR specification for this resource, see [Questionnaire](https://www.hl7.org/fhir/StructureDefinition/Questionnaire).