Release 5 Draft Ballot

This page is part of the FHIR Specification (v4.6.0: R5 Draft Ballot - see ballot notes). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions

11.4 Resource MedicationUsage - Content

Pharmacy Work GroupMaturity Level: 3 Trial UseSecurity Category: Patient Compartments: Encounter, Patient, Practitioner, RelatedPerson

A record of a medication that is being consumed by a patient. A MedicationUsage may indicate that the patient may be taking the medication now or has taken the medication in the past or will be taking the medication in the future. The source of this information can be the patient, significant other (such as a family member or spouse), or a clinician. A common scenario where this information is captured is during the history taking process during a patient visit or stay. The medication information may come from sources such as the patient's memory, from a prescription bottle, or from a list of medications the patient, clinician or other party maintains.

The primary difference between a medicationusage and a medicationadministration is that the medication administration has complete administration information and is based on actual administration information from the person who administered the medication. A medicationusage is often, if not always, less specific. There is no required date/time when the medication was administered, in fact we only know that a source has reported the patient is taking this medication, where details such as time, quantity, or rate or even medication product may be incomplete or missing or less precise. As stated earlier, the Medication Usage information may come from the patient's memory, from a prescription bottle or from a list of medications the patient, clinician or other party maintains. Medication administration is more formal and is not missing detailed information.

The MedicationUsage resource was previously called MedicationStatement.

11.4.1 Scope and Usage

Common usage includes:

  • the recording of non-prescription and/or recreational drugs
  • the recording of an intake medication list upon admission to hospital
  • the summarization of a patient's "active medications" in a patient profile

A MedicationUsage may be used to record substance abuse or the use of other agents such as tobacco or alcohol. This would typically be done if these substances are intended to be included in clinical decision support checking (for example, interaction checking) and as part of an active medication list. If the intent is to populate social history and/or to include additional information (for example, desire to quit, amount per day, negative health effects), then it is better to record as an Observation that could then be used to populate Social History.

This resource does not produce a medication list, but it does produce individual medication statements that may be used in the List resource to construct various types of medication lists. Note that other medication lists can also be constructed from the other Pharmacy resources (e.g., MedicationRequest, MedicationAdministration).

A medication statement is not a part of the prescribe -> dispense -> administer sequence, but is a report by a patient, significant other or a clinician that one or more of the prescribe, dispense or administer actions has occurred, resulting is a belief that the patient is, has, or will be using a particular medication.

The MedicationUsage resource was previously known as MedicationStatement.

MedicationUsage is an event resource from a FHIR workflow perspective - see Workflow Event

11.4.2 Boundaries and Relationships

The MedicationUsage resource is used to record a medications or substances that the patient reports as being taken, not taking, have taken in the past or may take in the future. It can also be used to record medication use that is derived from other records such as a MedicationRequest. The statement is not used to request or order a medication, supply or device. When requesting medication, supplies or devices when there is a patient focus or instructions regarding their use, a MedicationRequest, SupplyRequest or DeviceRequest should be used instead

The Medication domain includes a number of related resources

MedicationRequest An order for both supply of the medication and the instructions for administration of the medicine to a patient.
MedicationDispense Provision of a supply of a medication with the intention that it is subsequently consumed by a patient (usually in response to a prescription).
MedicationAdministration When a patient actually consumes a medicine, or it is otherwise administered to them
MedicationUsage This is a record of a medication being taken by a patient or that a medication has been given to a patient, where the record is the result of a report from the patient or another clinician, or derived from supporting information (for example, Claim, Observation or MedicationRequest). A medication statement is not a part of the prescribe->dispense->administer sequence but is a report that such a sequence (or at least a part of it) did take place, resulting in a belief that the patient has received a particular medication.

This resource is distinct from MedicationRequest, MedicationDispense and MedicationAdministration. Each of those resources refers to specific events - an individual order, an individual provisioning of medication or an individual dosing. MedicationUsage is a broader assertion covering a wider timespan and is independent of specific events. The existence of resource instances of any of the preceding three types may be used to infer a medication statement. However, medication statements can also be captured on the basis of other information, including an assertion by the patient or a care-giver, the results of a lab test, etc.

11.4.3 References

This resource is referenced by AdverseEvent, Goal, itself and Observation.

This resource implements the Event pattern.

11.4.4 Resource Content

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. MedicationUsage TUDomainResourceRecord of medication being taken by a patient
Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... identifier Σ0..*IdentifierExternal identifier
... basedOn Σ0..*Reference(MedicationRequest | CarePlan | ServiceRequest)Fulfils plan, proposal or order
... partOf Σ0..*Reference(MedicationAdministration | MedicationDispense | MedicationUsage | Procedure | Observation)Part of referenced event
... statusReason 0..*CodeableConceptReason for current status
SNOMED CT Drug Therapy Status codes (Example)
... category Σ0..*CodeableConceptType of medication usage
MedicationUsage Administration Location Codes (Example)
... medication Σ1..1CodeableReference(Medication)What medication was taken
SNOMED CT Medication Codes (Example)
... subject Σ1..1Reference(Patient | Group)Who is/was taking the medication
... encounter Σ0..1Reference(Encounter)Encounter associated with MedicationUsage
... effective[x] Σ0..1The date/time or interval when the medication is/was/will be taken
.... effectiveDateTimedateTime
.... effectivePeriodPeriod
... dateAsserted Σ0..1dateTimeWhen the usage was asserted?
... informationSource 0..1Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Organization)Person or organization that provided the information about the taking of this medication
... derivedFrom 0..*Reference(Any)Link to information used to derive the MedicationUsage
... reason 0..*CodeableReference(Condition | Observation | DiagnosticReport)Reason for why the medication is being/was taken
Condition/Problem/Diagnosis Codes (Example)
... note 0..*AnnotationFurther information about the usage
... renderedDosageInstruction 0..1stringFull representation of the dosage instructions
... dosage 0..*DosageDetails of how medication is/was taken or should be taken
... adherence Σ0..1CodeableConceptIndicates if the medication is being consumed or administered as instructed
MedicationUsage Adherence Codes (Example)

doco Documentation for this format

UML Diagram (Legend)

MedicationUsage (DomainResource)Identifiers associated with this Medication Usage that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to serveridentifier : Identifier [0..*]A plan, proposal or order that is fulfilled in whole or in part by this eventbasedOn : Reference [0..*] « MedicationRequest|CarePlan| ServiceRequest »A larger event of which this particular event is a component or steppartOf : Reference [0..*] « MedicationAdministration| MedicationDispense|MedicationUsage|Procedure|Observation »A code representing the status of recording the medication usage (this element modifies the meaning of other elements)status : code [1..1] « null (Strength=Required)MedicationUsage Status ! »Captures the reason for the current state of the MedicationUsagestatusReason : CodeableConcept [0..*] « null (Strength=Example) SNOMEDCTDrugTherapyStatusCodes?? »Type of medication usage (for example, drug classification like ATC, where meds would be administered, legal category of the medication.)category : CodeableConcept [0..*] « null (Strength=Example)MedicationUsage Administratio...?? »Identifies the medication being administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medicationsmedication : DataType [1..1] « Medication; null (Strength=Example)SNOMEDCTMedicationCodes?? »The person, animal or group who is/was taking the medicationsubject : Reference [1..1] « Patient|Group »The encounter that establishes the context for this MedicationUsageencounter : Reference [0..1] « Encounter »The interval of time during which it is being asserted that the patient is/was/will be taking the medication (or was not taking, when the MedicationUsage.status element is NotTaken)effective[x] : DataType [0..1] « dateTime|Period »The date when the Medication Usage was asserted by the information sourcedateAsserted : dateTime [0..1]The person or organization that provided the information about the taking of this medication. Note: Use derivedFrom when a MedicationUsage is derived from other resources, e.g. Claim or MedicationRequestinformationSource : Reference [0..1] « Patient|Practitioner| PractitionerRole|RelatedPerson|Organization »Allows linking the MedicationUsage to the underlying MedicationRequest, or to other information that supports or is used to derive the MedicationUsagederivedFrom : Reference [0..*] « Any »A concept, Condition or observation that supports why the medication is being/was takenreason : DataType [0..*] « Condition|Observation|DiagnosticReport; null (Strength=Example) Condition/Problem/DiagnosisCo...?? »Provides extra information about the Medication Usage that is not conveyed by the other attributesnote : Annotation [0..*]The full representation of the dose of the medication included in all dosage instructions. To be used when multiple dosage instructions are included to represent complex dosing such as increasing or tapering dosesrenderedDosageInstruction : string [0..1]Indicates how the medication is/was or should be taken by the patientdosage : Dosage [0..*]Indicates if the medication is being consumed or administered as instructedadherence : CodeableConcept [0..1] « null (Strength=Example)MedicationUsage Adherence ?? »

XML Template

<MedicationUsage xmlns="http://hl7.org/fhir"> doco
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <identifier><!-- 0..* Identifier External identifier --></identifier>
 <basedOn><!-- 0..* Reference(CarePlan|MedicationRequest|ServiceRequest) Fulfils plan, proposal or order --></basedOn>
 <partOf><!-- 0..* Reference(MedicationAdministration|MedicationDispense|
   MedicationUsage|Observation|Procedure) Part of referenced event --></partOf>
 <status value="[code]"/><!-- 1..1 completed | entered-in-error | unknown -->
 <statusReason><!-- 0..* CodeableConcept Reason for current status --></statusReason>
 <category><!-- 0..* CodeableConcept Type of medication usage --></category>
 <medication><!-- 1..1 CodeableReference(Medication) What medication was taken --></medication>
 <subject><!-- 1..1 Reference(Group|Patient) Who is/was taking  the medication --></subject>
 <encounter><!-- 0..1 Reference(Encounter) Encounter associated with MedicationUsage --></encounter>
 <effective[x]><!-- 0..1 dateTime|Period The date/time or interval when the medication is/was/will be taken --></effective[x]>
 <dateAsserted value="[dateTime]"/><!-- 0..1 When the usage was asserted? -->
 <informationSource><!-- 0..1 Reference(Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) Person or organization that provided the information about the taking of this medication --></informationSource>
 <derivedFrom><!-- 0..* Reference(Any) Link to information used to derive the MedicationUsage --></derivedFrom>
 <reason><!-- 0..* CodeableReference(Condition|DiagnosticReport|Observation) Reason for why the medication is being/was taken --></reason>
 <note><!-- 0..* Annotation Further information about the usage --></note>
 <renderedDosageInstruction value="[string]"/><!-- 0..1 Full representation of the dosage instructions -->
 <dosage><!-- 0..* Dosage Details of how medication is/was taken or should be taken --></dosage>
 <adherence><!-- 0..1 CodeableConcept Indicates if the medication is being consumed or administered as instructed --></adherence>
</MedicationUsage>

JSON Template

{doco
  "resourceType" : "MedicationUsage",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "identifier" : [{ Identifier }], // External identifier
  "basedOn" : [{ Reference(CarePlan|MedicationRequest|ServiceRequest) }], // Fulfils plan, proposal or order
  "partOf" : [{ Reference(MedicationAdministration|MedicationDispense|
   MedicationUsage|Observation|Procedure) }], // Part of referenced event
  "status" : "<code>", // R!  completed | entered-in-error | unknown
  "statusReason" : [{ CodeableConcept }], // Reason for current status
  "category" : [{ CodeableConcept }], // Type of medication usage
  "medication" : { CodeableReference(Medication) }, // R!  What medication was taken
  "subject" : { Reference(Group|Patient) }, // R!  Who is/was taking  the medication
  "encounter" : { Reference(Encounter) }, // Encounter associated with MedicationUsage
  // effective[x]: The date/time or interval when the medication is/was/will be taken. One of these 2:
  "effectiveDateTime" : "<dateTime>",
  "effectivePeriod" : { Period },
  "dateAsserted" : "<dateTime>", // When the usage was asserted?
  "informationSource" : { Reference(Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) }, // Person or organization that provided the information about the taking of this medication
  "derivedFrom" : [{ Reference(Any) }], // Link to information used to derive the MedicationUsage
  "reason" : [{ CodeableReference(Condition|DiagnosticReport|Observation) }], // Reason for why the medication is being/was taken
  "note" : [{ Annotation }], // Further information about the usage
  "renderedDosageInstruction" : "<string>", // Full representation of the dosage instructions
  "dosage" : [{ Dosage }], // Details of how medication is/was taken or should be taken
  "adherence" : { CodeableConcept } // Indicates if the medication is being consumed or administered as instructed
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco


[ a fhir:MedicationUsage;
  fhir:nodeRole fhir:treeRoot; # if this is the parser root

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:MedicationUsage.identifier [ Identifier ], ... ; # 0..* External identifier
  fhir:MedicationUsage.basedOn [ Reference(CarePlan|MedicationRequest|ServiceRequest) ], ... ; # 0..* Fulfils plan, proposal or order
  fhir:MedicationUsage.partOf [ Reference(MedicationAdministration|MedicationDispense|MedicationUsage|Observation|
  Procedure) ], ... ; # 0..* Part of referenced event
  fhir:MedicationUsage.status [ code ]; # 1..1 completed | entered-in-error | unknown
  fhir:MedicationUsage.statusReason [ CodeableConcept ], ... ; # 0..* Reason for current status
  fhir:MedicationUsage.category [ CodeableConcept ], ... ; # 0..* Type of medication usage
  fhir:MedicationUsage.medication [ CodeableReference(Medication) ]; # 1..1 What medication was taken
  fhir:MedicationUsage.subject [ Reference(Group|Patient) ]; # 1..1 Who is/was taking  the medication
  fhir:MedicationUsage.encounter [ Reference(Encounter) ]; # 0..1 Encounter associated with MedicationUsage
  # MedicationUsage.effective[x] : 0..1 The date/time or interval when the medication is/was/will be taken. One of these 2
    fhir:MedicationUsage.effectiveDateTime [ dateTime ]
    fhir:MedicationUsage.effectivePeriod [ Period ]
  fhir:MedicationUsage.dateAsserted [ dateTime ]; # 0..1 When the usage was asserted?
  fhir:MedicationUsage.informationSource [ Reference(Organization|Patient|Practitioner|PractitionerRole|RelatedPerson) ]; # 0..1 Person or organization that provided the information about the taking of this medication
  fhir:MedicationUsage.derivedFrom [ Reference(Any) ], ... ; # 0..* Link to information used to derive the MedicationUsage
  fhir:MedicationUsage.reason [ CodeableReference(Condition|DiagnosticReport|Observation) ], ... ; # 0..* Reason for why the medication is being/was taken
  fhir:MedicationUsage.note [ Annotation ], ... ; # 0..* Further information about the usage
  fhir:MedicationUsage.renderedDosageInstruction [ string ]; # 0..1 Full representation of the dosage instructions
  fhir:MedicationUsage.dosage [ Dosage ], ... ; # 0..* Details of how medication is/was taken or should be taken
  fhir:MedicationUsage.adherence [ CodeableConcept ]; # 0..1 Indicates if the medication is being consumed or administered as instructed
]

Changes since R3

This resource did not exist in Release 2

This analysis is available as XML or JSON.

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. MedicationUsage TUDomainResourceRecord of medication being taken by a patient
Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... identifier Σ0..*IdentifierExternal identifier
... basedOn Σ0..*Reference(MedicationRequest | CarePlan | ServiceRequest)Fulfils plan, proposal or order
... partOf Σ0..*Reference(MedicationAdministration | MedicationDispense | MedicationUsage | Procedure | Observation)Part of referenced event
... statusReason 0..*CodeableConceptReason for current status
SNOMED CT Drug Therapy Status codes (Example)
... category Σ0..*CodeableConceptType of medication usage
MedicationUsage Administration Location Codes (Example)
... medication Σ1..1CodeableReference(Medication)What medication was taken
SNOMED CT Medication Codes (Example)
... subject Σ1..1Reference(Patient | Group)Who is/was taking the medication
... encounter Σ0..1Reference(Encounter)Encounter associated with MedicationUsage
... effective[x] Σ0..1The date/time or interval when the medication is/was/will be taken
.... effectiveDateTimedateTime
.... effectivePeriodPeriod
... dateAsserted Σ0..1dateTimeWhen the usage was asserted?
... informationSource 0..1Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Organization)Person or organization that provided the information about the taking of this medication
... derivedFrom 0..*Reference(Any)Link to information used to derive the MedicationUsage
... reason 0..*CodeableReference(Condition | Observation | DiagnosticReport)Reason for why the medication is being/was taken
Condition/Problem/Diagnosis Codes (Example)
... note 0..*AnnotationFurther information about the usage
... renderedDosageInstruction 0..1stringFull representation of the dosage instructions
... dosage 0..*DosageDetails of how medication is/was taken or should be taken
... adherence Σ0..1CodeableConceptIndicates if the medication is being consumed or administered as instructed
MedicationUsage Adherence Codes (Example)

doco Documentation for this format

UML Diagram (Legend)

MedicationUsage (DomainResource)Identifiers associated with this Medication Usage that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to serveridentifier : Identifier [0..*]A plan, proposal or order that is fulfilled in whole or in part by this eventbasedOn : Reference [0..*] « MedicationRequest|CarePlan| ServiceRequest »A larger event of which this particular event is a component or steppartOf : Reference [0..*] « MedicationAdministration| MedicationDispense|MedicationUsage|Procedure|Observation »A code representing the status of recording the medication usage (this element modifies the meaning of other elements)status : code [1..1] « null (Strength=Required)MedicationUsage Status ! »Captures the reason for the current state of the MedicationUsagestatusReason : CodeableConcept [0..*] « null (Strength=Example) SNOMEDCTDrugTherapyStatusCodes?? »Type of medication usage (for example, drug classification like ATC, where meds would be administered, legal category of the medication.)category : CodeableConcept [0..*] « null (Strength=Example)MedicationUsage Administratio...?? »Identifies the medication being administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medicationsmedication : DataType [1..1] « Medication; null (Strength=Example)SNOMEDCTMedicationCodes?? »The person, animal or group who is/was taking the medicationsubject : Reference [1..1] « Patient|Group »The encounter that establishes the context for this MedicationUsageencounter : Reference [0..1] « Encounter »The interval of time during which it is being asserted that the patient is/was/will be taking the medication (or was not taking, when the MedicationUsage.status element is NotTaken)effective[x] : DataType [0..1] « dateTime|Period »The date when the Medication Usage was asserted by the information sourcedateAsserted : dateTime [0..1]The person or organization that provided the information about the taking of this medication. Note: Use derivedFrom when a MedicationUsage is derived from other resources, e.g. Claim or MedicationRequestinformationSource : Reference [0..1] « Patient|Practitioner| PractitionerRole|RelatedPerson|Organization »Allows linking the MedicationUsage to the underlying MedicationRequest, or to other information that supports or is used to derive the MedicationUsagederivedFrom : Reference [0..*] « Any »A concept, Condition or observation that supports why the medication is being/was takenreason : DataType [0..*] « Condition|Observation|DiagnosticReport; null (Strength=Example) Condition/Problem/DiagnosisCo...?? »Provides extra information about the Medication Usage that is not conveyed by the other attributesnote : Annotation [0..*]The full representation of the dose of the medication included in all dosage instructions. To be used when multiple dosage instructions are included to represent complex dosing such as increasing or tapering dosesrenderedDosageInstruction : string [0..1]Indicates how the medication is/was or should be taken by the patientdosage : Dosage [0..*]Indicates if the medication is being consumed or administered as instructedadherence : CodeableConcept [0..1] « null (Strength=Example)MedicationUsage Adherence ?? »

XML Template

<MedicationUsage xmlns="http://hl7.org/fhir"> doco
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <identifier><!-- 0..* Identifier External identifier --></identifier>
 <basedOn><!-- 0..* Reference(CarePlan|MedicationRequest|ServiceRequest) Fulfils plan, proposal or order --></basedOn>
 <partOf><!-- 0..* Reference(MedicationAdministration|MedicationDispense|
   MedicationUsage|Observation|Procedure) Part of referenced event --></partOf>
 <status value="[code]"/><!-- 1..1 completed | entered-in-error | unknown -->
 <statusReason><!-- 0..* CodeableConcept Reason for current status --></statusReason>
 <category><!-- 0..* CodeableConcept Type of medication usage --></category>
 <medication><!-- 1..1 CodeableReference(Medication) What medication was taken --></medication>
 <subject><!-- 1..1 Reference(Group|Patient) Who is/was taking  the medication --></subject>
 <encounter><!-- 0..1 Reference(Encounter) Encounter associated with MedicationUsage --></encounter>
 <effective[x]><!-- 0..1 dateTime|Period The date/time or interval when the medication is/was/will be taken --></effective[x]>
 <dateAsserted value="[dateTime]"/><!-- 0..1 When the usage was asserted? -->
 <informationSource><!-- 0..1 Reference(Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) Person or organization that provided the information about the taking of this medication --></informationSource>
 <derivedFrom><!-- 0..* Reference(Any) Link to information used to derive the MedicationUsage --></derivedFrom>
 <reason><!-- 0..* CodeableReference(Condition|DiagnosticReport|Observation) Reason for why the medication is being/was taken --></reason>
 <note><!-- 0..* Annotation Further information about the usage --></note>
 <renderedDosageInstruction value="[string]"/><!-- 0..1 Full representation of the dosage instructions -->
 <dosage><!-- 0..* Dosage Details of how medication is/was taken or should be taken --></dosage>
 <adherence><!-- 0..1 CodeableConcept Indicates if the medication is being consumed or administered as instructed --></adherence>
</MedicationUsage>

JSON Template

{doco
  "resourceType" : "MedicationUsage",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "identifier" : [{ Identifier }], // External identifier
  "basedOn" : [{ Reference(CarePlan|MedicationRequest|ServiceRequest) }], // Fulfils plan, proposal or order
  "partOf" : [{ Reference(MedicationAdministration|MedicationDispense|
   MedicationUsage|Observation|Procedure) }], // Part of referenced event
  "status" : "<code>", // R!  completed | entered-in-error | unknown
  "statusReason" : [{ CodeableConcept }], // Reason for current status
  "category" : [{ CodeableConcept }], // Type of medication usage
  "medication" : { CodeableReference(Medication) }, // R!  What medication was taken
  "subject" : { Reference(Group|Patient) }, // R!  Who is/was taking  the medication
  "encounter" : { Reference(Encounter) }, // Encounter associated with MedicationUsage
  // effective[x]: The date/time or interval when the medication is/was/will be taken. One of these 2:
  "effectiveDateTime" : "<dateTime>",
  "effectivePeriod" : { Period },
  "dateAsserted" : "<dateTime>", // When the usage was asserted?
  "informationSource" : { Reference(Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) }, // Person or organization that provided the information about the taking of this medication
  "derivedFrom" : [{ Reference(Any) }], // Link to information used to derive the MedicationUsage
  "reason" : [{ CodeableReference(Condition|DiagnosticReport|Observation) }], // Reason for why the medication is being/was taken
  "note" : [{ Annotation }], // Further information about the usage
  "renderedDosageInstruction" : "<string>", // Full representation of the dosage instructions
  "dosage" : [{ Dosage }], // Details of how medication is/was taken or should be taken
  "adherence" : { CodeableConcept } // Indicates if the medication is being consumed or administered as instructed
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco


[ a fhir:MedicationUsage;
  fhir:nodeRole fhir:treeRoot; # if this is the parser root

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:MedicationUsage.identifier [ Identifier ], ... ; # 0..* External identifier
  fhir:MedicationUsage.basedOn [ Reference(CarePlan|MedicationRequest|ServiceRequest) ], ... ; # 0..* Fulfils plan, proposal or order
  fhir:MedicationUsage.partOf [ Reference(MedicationAdministration|MedicationDispense|MedicationUsage|Observation|
  Procedure) ], ... ; # 0..* Part of referenced event
  fhir:MedicationUsage.status [ code ]; # 1..1 completed | entered-in-error | unknown
  fhir:MedicationUsage.statusReason [ CodeableConcept ], ... ; # 0..* Reason for current status
  fhir:MedicationUsage.category [ CodeableConcept ], ... ; # 0..* Type of medication usage
  fhir:MedicationUsage.medication [ CodeableReference(Medication) ]; # 1..1 What medication was taken
  fhir:MedicationUsage.subject [ Reference(Group|Patient) ]; # 1..1 Who is/was taking  the medication
  fhir:MedicationUsage.encounter [ Reference(Encounter) ]; # 0..1 Encounter associated with MedicationUsage
  # MedicationUsage.effective[x] : 0..1 The date/time or interval when the medication is/was/will be taken. One of these 2
    fhir:MedicationUsage.effectiveDateTime [ dateTime ]
    fhir:MedicationUsage.effectivePeriod [ Period ]
  fhir:MedicationUsage.dateAsserted [ dateTime ]; # 0..1 When the usage was asserted?
  fhir:MedicationUsage.informationSource [ Reference(Organization|Patient|Practitioner|PractitionerRole|RelatedPerson) ]; # 0..1 Person or organization that provided the information about the taking of this medication
  fhir:MedicationUsage.derivedFrom [ Reference(Any) ], ... ; # 0..* Link to information used to derive the MedicationUsage
  fhir:MedicationUsage.reason [ CodeableReference(Condition|DiagnosticReport|Observation) ], ... ; # 0..* Reason for why the medication is being/was taken
  fhir:MedicationUsage.note [ Annotation ], ... ; # 0..* Further information about the usage
  fhir:MedicationUsage.renderedDosageInstruction [ string ]; # 0..1 Full representation of the dosage instructions
  fhir:MedicationUsage.dosage [ Dosage ], ... ; # 0..* Details of how medication is/was taken or should be taken
  fhir:MedicationUsage.adherence [ CodeableConcept ]; # 0..1 Indicates if the medication is being consumed or administered as instructed
]

Changes since Release 3

This resource did not exist in Release 2

This analysis is available as XML or JSON.

 

See the Profiles & Extensions and the alternate definitions: Master Definition XML + JSON, XML Schema/Schematron + JSON Schema, ShEx (for Turtle) + see the extensions, the spreadsheet version & the dependency analysis a

11.4.4.1 Terminology Bindings

PathDefinitionTypeReference
MedicationUsage.status RequiredMedicationUsage Status Codes
MedicationUsage.statusReason ExampleSNOMEDCTDrugTherapyStatusCodes
MedicationUsage.category ExampleMedicationUsage Administration Location Codes
MedicationUsage.medication ExampleSNOMEDCTMedicationCodes
MedicationUsage.reason ExampleCondition/Problem/DiagnosisCodes
MedicationUsage.adherence ExampleMedicationUsage Adherence Codes

11.4.5 Search Parameters

Search parameters for this resource. The common parameters also apply. See Searching for more information about searching in REST, messaging, and services.

NameTypeDescriptionExpressionIn Common
adherence NtokenReturns statements based on adherence or complianceMedicationUsage.adherence
categorytokenReturns statements of this category of MedicationUsageMedicationUsage.category
code DtokenReturn statements of this medication codeMedicationUsage.medication.concept
effectivedateDate when patient was taking (or not taking) the medicationMedicationUsage.effective
encounterreferenceReturns statements for a specific encounterMedicationUsage.encounter
(Encounter)
identifiertokenReturn statements with this external identifierMedicationUsage.identifier
medication DreferenceReturn statements of this medication referenceMedicationUsage.medication.reference
part-ofreferenceReturns statements that are part of another event.MedicationUsage.partOf
(MedicationDispense, Observation, MedicationAdministration, Procedure, MedicationUsage)
patientreferenceReturns statements for a specific patient.MedicationUsage.subject.where(resolve() is Patient)
(Group, Patient)
sourcereferenceWho or where the information in the statement came fromMedicationUsage.informationSource
(Practitioner, Organization, Patient, PractitionerRole, RelatedPerson)
status NtokenReturn statements that match the given statusMedicationUsage.status
subjectreferenceThe identity of a patient, animal or group to list statements forMedicationUsage.subject
(Group, Patient)