> ## 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. # RequestGroup > A group of related requests that can be used to capture intended activities that have inter-dependencies such as give this medication after that one. ## Properties | Name | Required | Type | Description | | --------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- | | identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | Business identifier | | instantiatesCanonical | No | canonical\[] | Instantiates FHIR protocol or definition | | instantiatesUri | No | uri\[] | Instantiates external protocol or definition | | basedOn | No | Reference\\[] | Fulfills plan, proposal, or order | | replaces | No | Reference\\[] | Request(s) replaced by this request | | groupIdentifier | No | [Identifier](/medical-api/fhir/data-types/identifier) | Composite request this is part of | | status | Yes | code | draft / active / on-hold / revoked / completed / entered-in-error / unknown | | intent | Yes | code | proposal / plan / directive / order / original-order / reflex-order / filler-order / instance-order / option | | priority | No | code | routine / urgent / asap / stat | | code | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | What's being requested/ordered | | subject | No | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Group](/medical-api/fhir/resources/group)> | Who the request group is about | | encounter | No | Reference\<[Encounter](/medical-api/fhir/resources/encounter)> | Created as part of | | authoredOn | No | dateTime | When the request group was authored | | author | No | Reference\<[Device](/medical-api/fhir/resources/device) / [Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole)> | Device or practitioner that authored the request group | | reasonCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Why the request group is needed | | reasonReference | No | Reference\<[Condition](/medical-api/fhir/resources/condition) / [Observation](/medical-api/fhir/resources/observation) / [DiagnosticReport](/medical-api/fhir/resources/diagnosticreport) / [DocumentReference](/medical-api/fhir/resources/documentreference)>\[] | Why the request group is needed | | note | No | [Annotation](/medical-api/fhir/data-types/annotation)\[] | Additional notes about the response | | action | No | RequestGroupAction | Proposed actions, if any | | - 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 | | - prefix | No | string | User-visible prefix for the action (e.g. 1. or A.) | | - title | No | string | User-visible title | | - description | No | string | Short description of the action | | - textEquivalent | No | string | Static text equivalent of the action, used if the dynamic aspects cannot be interpreted by the receiving system | | - priority | No | code | routine / urgent / asap / stat | | - code | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Code representing the meaning of the action or sub-actions | | - documentation | No | [RelatedArtifact](/medical-api/fhir/data-types/relatedartifact)\[] | Supporting documentation for the intended performer of the action | | - condition | No | RequestGroupActionCondition | Whether or not the action is applicable | | - 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 | | - kind | Yes | code | applicability / start / stop | | - expression | No | [Expression](/medical-api/fhir/data-types/expression) | Boolean-valued expression | | - relatedAction | No | RequestGroupActionRelatedAction | Relationship to another action | | - 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 | | - actionId | Yes | id | What action this is related to | | - relationship | Yes | code | before-start / before / before-end / concurrent-with-start / concurrent / concurrent-with-end / after-start / after / after-end | | - offset\[x] | No | [Duration](/medical-api/fhir/data-types/duration), [Range](/medical-api/fhir/data-types/range) | Time offset for the relationship | | - timing\[x] | No | dateTime, [Age](/medical-api/fhir/data-types/age), [Period](/medical-api/fhir/data-types/period), [Duration](/medical-api/fhir/data-types/duration), [Range](/medical-api/fhir/data-types/range), [Timing](/medical-api/fhir/data-types/timing) | When the action should take place | | - participant | No | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [RelatedPerson](/medical-api/fhir/resources/relatedperson) / [Device](/medical-api/fhir/resources/device)>\[] | Who should perform the action | | - type | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | create / update / remove / fire-event | | - groupingBehavior | No | code | visual-group / logical-group / sentence-group | | - selectionBehavior | No | code | any / all / all-or-none / exactly-one / at-most-one / one-or-more | | - requiredBehavior | No | code | must / could / must-unless-documented | | - precheckBehavior | No | code | yes / no | | - cardinalityBehavior | No | code | single / multiple | | - resource | No | Reference\ | The target of the action | | - action | No | \[] | Sub action | ## Search Parameters | Name | Type | Description | Expression | | ---------------------- | --------- | ------------------------------------------------------------------ | ---------------------------------- | | author | reference | The author of the request group | RequestGroup.author | | authored | date | The date the request group was authored | RequestGroup.authoredOn | | code | token | The code of the request group | RequestGroup.code | | encounter | reference | The encounter the request group applies to | RequestGroup.encounter | | group-identifier | token | The group identifier for the request group | RequestGroup.groupIdentifier | | identifier | token | External identifiers for the request group | RequestGroup.identifier | | instantiates-canonical | reference | The FHIR-based definition from which the request group is realized | RequestGroup.instantiatesCanonical | | instantiates-uri | uri | The external definition from which the request group is realized | RequestGroup.instantiatesUri | | intent | token | The intent of the request group | RequestGroup.intent | | participant | reference | The participant in the requests in the group | RequestGroup.action.participant | | patient | reference | The identity of a patient to search for request groups | RequestGroup.subject | | priority | token | The priority of the request group | RequestGroup.priority | | status | token | The status of the request group | RequestGroup.status | | subject | reference | The subject that the request group is about | RequestGroup.subject | ## 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 [RequestGroup](https://www.hl7.org/fhir/StructureDefinition/RequestGroup).