> ## 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. # MedicationRequest > An order or request for both supply of the medication and the instructions for administration of the medication to a patient. The resource is called MedicationRequest rather than MedicationPrescription or MedicationOrder to generalize the use across inpatient and outpatient settings, including care plans, etc., and to harmonize with workflow patterns. ## Properties | Name | Required | Type | Description | | ------------------------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------ | | identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | External ids for this request | | status | Yes | code | active / on-hold / cancelled / completed / entered-in-error / stopped / draft / unknown | | statusReason | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Reason for current status | | intent | Yes | code | proposal / plan / order / original-order / reflex-order / filler-order / instance-order / option | | category | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Type of medication usage | | priority | No | code | routine / urgent / asap / stat | | doNotPerform | No | boolean | True if request is prohibiting action | | reported\[x] | No | boolean, 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) / [Organization](/medical-api/fhir/resources/organization)> | Reported rather than primary record | | medication\[x] | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept), Reference\<[Medication](/medical-api/fhir/resources/medication)> | Medication to be taken | | subject | Yes | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Group](/medical-api/fhir/resources/group)> | Who or group medication request is for | | encounter | No | Reference\<[Encounter](/medical-api/fhir/resources/encounter)> | Encounter created as part of encounter/admission/stay | | supportingInformation | No | Reference\\[] | Information to support ordering of the medication | | authoredOn | No | dateTime | When request was initially authored | | requester | No | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [Organization](/medical-api/fhir/resources/organization) / [Patient](/medical-api/fhir/resources/patient) / [RelatedPerson](/medical-api/fhir/resources/relatedperson) / [Device](/medical-api/fhir/resources/device)> | Who/What requested the Request | | performer | No | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [Organization](/medical-api/fhir/resources/organization) / [Patient](/medical-api/fhir/resources/patient) / [Device](/medical-api/fhir/resources/device) / [RelatedPerson](/medical-api/fhir/resources/relatedperson) / [CareTeam](/medical-api/fhir/resources/careteam)> | Intended performer of administration | | performerType | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Desired kind of performer of the medication administration | | recorder | No | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole)> | Person who entered the request | | reasonCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Reason or indication for ordering or not ordering the medication | | reasonReference | No | Reference\<[Condition](/medical-api/fhir/resources/condition) / [Observation](/medical-api/fhir/resources/observation)>\[] | Condition or observation that supports why the prescription is being written | | instantiatesCanonical | No | canonical\[] | Instantiates FHIR protocol or definition | | instantiatesUri | No | uri\[] | Instantiates external protocol or definition | | basedOn | No | Reference\<[CarePlan](/medical-api/fhir/resources/careplan) / [MedicationRequest](/medical-api/fhir/resources/medicationrequest) / [ServiceRequest](/medical-api/fhir/resources/servicerequest) / [ImmunizationRecommendation](/medical-api/fhir/resources/immunizationrecommendation)>\[] | What request fulfills | | groupIdentifier | No | [Identifier](/medical-api/fhir/data-types/identifier) | Composite request this is part of | | courseOfTherapyType | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Overall pattern of medication administration | | insurance | No | Reference\<[Coverage](/medical-api/fhir/resources/coverage) / [ClaimResponse](/medical-api/fhir/resources/claimresponse)>\[] | Associated insurance coverage | | note | No | [Annotation](/medical-api/fhir/data-types/annotation)\[] | Information about the prescription | | dosageInstruction | No | [Dosage](/medical-api/fhir/data-types/dosage)\[] | How the medication should be taken | | dispenseRequest | No | MedicationRequestDispenseRequest | Medication supply authorization | | - 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 | | - initialFill | No | MedicationRequestDispenseRequestInitialFill | First fill details | | - 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 | | - quantity | No | [Quantity](/medical-api/fhir/data-types/quantity) | First fill quantity | | - duration | No | [Duration](/medical-api/fhir/data-types/duration) | First fill duration | | - dispenseInterval | No | [Duration](/medical-api/fhir/data-types/duration) | Minimum period of time between dispenses | | - validityPeriod | No | [Period](/medical-api/fhir/data-types/period) | Time period supply is authorized for | | - numberOfRepeatsAllowed | No | unsignedInt | Number of refills authorized | | - quantity | No | [Quantity](/medical-api/fhir/data-types/quantity) | Amount of medication to supply per dispense | | - expectedSupplyDuration | No | [Duration](/medical-api/fhir/data-types/duration) | Number of days supply per dispense | | - performer | No | Reference\<[Organization](/medical-api/fhir/resources/organization)> | Intended dispenser | | substitution | No | MedicationRequestSubstitution | Any restrictions on medication substitution | | - 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 | | - allowed\[x] | Yes | boolean, [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Whether substitution is allowed or not | | - reason | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Why should (not) substitution be made | | priorPrescription | No | Reference\<[MedicationRequest](/medical-api/fhir/resources/medicationrequest)> | An order/prescription that is being replaced | | detectedIssue | No | Reference\<[DetectedIssue](/medical-api/fhir/resources/detectedissue)>\[] | Clinical Issue with action | | eventHistory | No | Reference\<[Provenance](/medical-api/fhir/resources/provenance)>\[] | A list of events of interest in the lifecycle | ## Search Parameters | Name | Type | Description | Expression | | ---------------------- | --------- | ------------------------------------------------------------------------------ | ------------------------------------------------ | | code | token | Return prescriptions of this medication code | MedicationRequest.medication | | identifier | token | Return prescriptions with this external identifier | MedicationRequest.identifier | | patient | reference | Returns prescriptions for a specific patient | MedicationRequest.subject | | medication | reference | Return prescriptions for this medication reference | MedicationRequest.medication | | status | token | Status of the prescription | MedicationRequest.status | | authoredon | date | Return prescriptions written on this date | MedicationRequest.authoredOn | | category | token | Returns prescriptions with different categories | MedicationRequest.category | | date | date | Returns medication request to be administered on a specific date | MedicationRequest.dosageInstruction.timing.event | | encounter | reference | Return prescriptions with this encounter identifier | MedicationRequest.encounter | | intended-dispenser | reference | Returns prescriptions intended to be dispensed by this Organization | MedicationRequest.dispenseRequest.performer | | intended-performer | reference | Returns the intended performer of the administration of the medication request | MedicationRequest.performer | | intended-performertype | token | Returns requests for a specific type of performer | MedicationRequest.performerType | | intent | token | Returns prescriptions with different intents | MedicationRequest.intent | | priority | token | Returns prescriptions with different priorities | MedicationRequest.priority | | requester | reference | Returns prescriptions prescribed by this prescriber | MedicationRequest.requester | | subject | reference | The identity of a patient to list orders for | MedicationRequest.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 [MedicationRequest](https://www.hl7.org/fhir/StructureDefinition/MedicationRequest).