> ## 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. # MedicationAdministration > Describes the event of a patient consuming or otherwise being administered a medication. This may be as simple as swallowing a tablet or it may be a long running infusion. Related resources tie this event to the authorizing prescription, and the specific encounter between patient and health care practitioner. ## Properties | Name | Required | Type | Description | | --------------------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------- | | identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | External identifier | | instantiates | No | uri\[] | Instantiates protocol or definition | | partOf | No | Reference\<[MedicationAdministration](/medical-api/fhir/resources/medicationadministration) / [Procedure](/medical-api/fhir/resources/procedure)>\[] | Part of referenced event | | status | Yes | code | in-progress / not-done / on-hold / completed / entered-in-error / stopped / unknown | | statusReason | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Reason administration not performed | | category | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Type of medication usage | | medication\[x] | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept), Reference\<[Medication](/medical-api/fhir/resources/medication)> | What was administered | | subject | Yes | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Group](/medical-api/fhir/resources/group)> | Who received medication | | context | No | Reference\<[Encounter](/medical-api/fhir/resources/encounter) / [EpisodeOfCare](/medical-api/fhir/resources/episodeofcare)> | Encounter or Episode of Care administered as part of | | supportingInformation | No | Reference\\[] | Additional information to support administration | | effective\[x] | Yes | dateTime, [Period](/medical-api/fhir/data-types/period) | Start and end time of administration | | performer | No | MedicationAdministrationPerformer | Who performed the medication administration and what they did | | - 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 | | - function | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Type of performance | | - actor | Yes | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [Patient](/medical-api/fhir/resources/patient) / [RelatedPerson](/medical-api/fhir/resources/relatedperson) / [Device](/medical-api/fhir/resources/device)> | Who performed the medication administration | | reasonCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Reason administration performed | | reasonReference | No | Reference\<[Condition](/medical-api/fhir/resources/condition) / [Observation](/medical-api/fhir/resources/observation) / [DiagnosticReport](/medical-api/fhir/resources/diagnosticreport)>\[] | Condition or observation that supports why the medication was administered | | request | No | Reference\<[MedicationRequest](/medical-api/fhir/resources/medicationrequest)> | Request administration performed against | | device | No | Reference\<[Device](/medical-api/fhir/resources/device)>\[] | Device used to administer | | note | No | [Annotation](/medical-api/fhir/data-types/annotation)\[] | Information about the administration | | dosage | No | MedicationAdministrationDosage | Details of how medication was taken | | - 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 | | - text | No | string | Free text dosage instructions e.g. SIG | | - site | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Body site administered to | | - route | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Path of substance into body | | - method | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | How drug was administered | | - dose | No | [Quantity](/medical-api/fhir/data-types/quantity) | Amount of medication per dose | | - rate\[x] | No | [Ratio](/medical-api/fhir/data-types/ratio), [Quantity](/medical-api/fhir/data-types/quantity) | Dose quantity per unit of time | | 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 administrations of this medication code | MedicationAdministration.medication | | identifier | token | Return administrations with this external identifier | MedicationAdministration.identifier | | patient | reference | The identity of a patient to list administrations for | MedicationAdministration.subject | | context | reference | Return administrations that share this encounter or episode of care | MedicationAdministration.context | | device | reference | Return administrations with this administration device identity | MedicationAdministration.device | | effective-time | date | Date administration happened (or did not happen) | MedicationAdministration.effective | | medication | reference | Return administrations of this medication resource | MedicationAdministration.medication | | performer | reference | The identity of the individual who administered the medication | MedicationAdministration.performer.actor | | reason-given | token | Reasons for administering the medication | MedicationAdministration.reasonCode | | reason-not-given | token | Reasons for not administering the medication | MedicationAdministration.statusReason | | request | reference | The identity of a request to list administrations from | MedicationAdministration.request | | status | token | MedicationAdministration event status (for example one of active/paused/completed/nullified) | MedicationAdministration.status | | subject | reference | The identity of the individual or group to list administrations for | MedicationAdministration.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 [MedicationAdministration](https://www.hl7.org/fhir/StructureDefinition/MedicationAdministration).