Release 4B

This page is part of the FHIR Specification (v4.3.0: R4B - STU). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2

11.4 Resource MedicationStatement - Content

Pharmacy Work Group Maturity Level: 3 Trial Use Security Category: Patient Compartments: Patient, Practitioner, RelatedPerson

A record of a medication that is being consumed by a patient. A MedicationStatement 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 medication statement and a medication administration is that the medication administration has complete administration information and is based on actual administration information from the person who administered the medication. A medication statement 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 statement 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.

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 MedicationStatement 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.

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

11.4.2 Boundaries and Relationships

The MedicationStatement 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

MedicationStatement 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. MedicationStatement 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.

Structure

Name	Flags	Card.	Type	Description & Constraints doco
.. MedicationStatement	TU	DomainResource	Record of medication being taken by a patient Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... identifier	Σ	0..*	Identifier	External identifier
... basedOn	Σ	0..*	Reference(MedicationRequest \| CarePlan \| ServiceRequest)	Fulfils plan, proposal or order
... partOf	Σ	0..*	Reference(MedicationAdministration \| MedicationDispense \| MedicationStatement \| Procedure \| Observation)	Part of referenced event
... status	?! Σ	1..1	code	active \| completed \| entered-in-error \| intended \| stopped \| on-hold \| unknown \| not-taken MedicationStatement Status Codes (Required)
... statusReason	0..*	CodeableConcept	Reason for current status SNOMED CT Drug Therapy Status codes (Example)
... category	Σ	0..1	CodeableConcept	Type of medication usage Medication usage category codes (Preferred)
... medication[x]	Σ	1..1	What medication was taken SNOMED CT Medication Codes (Example)
.... medicationCodeableConcept	CodeableConcept
.... medicationReference	Reference(Medication)
... subject	Σ	1..1	Reference(Patient \| Group)	Who is/was taking the medication
... context	Σ	0..1	Reference(Encounter \| EpisodeOfCare)	Encounter / Episode associated with MedicationStatement
... effective[x]	Σ	0..1	The date/time or interval when the medication is/was/will be taken
.... effectiveDateTime	dateTime
.... effectivePeriod	Period
... dateAsserted	Σ	0..1	dateTime	When the statement was asserted?
... informationSource	0..1	Reference(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Organization)	Person or organization that provided the information about the taking of this medication
... derivedFrom	0..*	Reference(Any)	Additional supporting information
... reasonCode	0..*	CodeableConcept	Reason for why the medication is being/was taken Condition/Problem/Diagnosis Codes (Example)
... reasonReference	0..*	Reference(Condition \| Observation \| DiagnosticReport)	Condition or observation that supports why the medication is being/was taken
... note	0..*	Annotation	Further information about the statement
... dosage	0..*	Dosage	Details of how medication is/was taken or should be taken
doco Documentation for this format

UML Diagram (Legend)

XML Template

<MedicationStatement 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|
 MedicationStatement|Observation|Procedure) Part of referenced event  --></partOf>
 <status value="[code ]"/><!-- 1..1 active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken  -->
 <statusReason><!-- 0..* CodeableConcept  Reason for current status  --></statusReason>
 <category><!-- 0..1 CodeableConcept  Type of medication usage  --></category>
 <medication[x]><!-- 1..1 CodeableConcept|Reference(Medication) What medication was taken  --></medication[x]>
 <subject><!-- 1..1 Reference(Group|Patient) Who is/was taking the medication  --></subject>
 <context><!-- 0..1 Reference(Encounter|EpisodeOfCare) Encounter / Episode associated with MedicationStatement  --></context>
 <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 statement 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) Additional supporting information  --></derivedFrom>
 <reasonCode><!-- 0..* CodeableConcept  Reason for why the medication is being/was taken  --></reasonCode>
 <reasonReference><!-- 0..* Reference(Condition|DiagnosticReport|Observation) Condition or observation that supports why the medication is being/was taken  --></reasonReference>
 <note><!-- 0..* Annotation  Further information about the statement  --></note>
 <dosage><!-- 0..* Dosage  Details of how medication is/was taken or should be taken  --></dosage>
</MedicationStatement>

JSON Template

{doco 
 "resourceType" : "MedicationStatement",
 // 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|
 MedicationStatement|Observation|Procedure) }], // Part of referenced event 
 "status" : "<code >", // R! active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken 
 "statusReason" : [{ CodeableConcept  }], // Reason for current status 
 "category" : { CodeableConcept  }, // Type of medication usage 
 // medication[x]: What medication was taken. One of these 2:
 "medicationCodeableConcept" : { CodeableConcept  },
 "medicationReference" : { Reference(Medication) },
 "subject" : { Reference(Group|Patient) }, // R! Who is/was taking the medication 
 "context" : { Reference(Encounter|EpisodeOfCare) }, // Encounter / Episode associated with MedicationStatement 
 // 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 statement 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) }], // Additional supporting information 
 "reasonCode" : [{ CodeableConcept  }], // Reason for why the medication is being/was taken 
 "reasonReference" : [{ Reference(Condition|DiagnosticReport|Observation) }], // Condition or observation that supports why the medication is being/was taken 
 "note" : [{ Annotation  }], // Further information about the statement 
 "dosage" : [{ Dosage  }] // Details of how medication is/was taken or should be taken 
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco 
[ a fhir:MedicationStatement;
 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:MedicationStatement.identifier[ Identifier ], ... ; # 0..* External identifier
 fhir:MedicationStatement.basedOn[ Reference(CarePlan|MedicationRequest|ServiceRequest) ], ... ; # 0..* Fulfils plan, proposal or order
 fhir:MedicationStatement.partOf[ Reference(MedicationAdministration|MedicationDispense|MedicationStatement|Observation|
 Procedure) ], ... ; # 0..* Part of referenced event
 fhir:MedicationStatement.status[ code ]; # 1..1 active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken
 fhir:MedicationStatement.statusReason[ CodeableConcept ], ... ; # 0..* Reason for current status
 fhir:MedicationStatement.category[ CodeableConcept ]; # 0..1 Type of medication usage
 # MedicationStatement.medication[x]: 1..1 What medication was taken. One of these 2
 fhir:MedicationStatement.medicationCodeableConcept[ CodeableConcept ]
 fhir:MedicationStatement.medicationReference[ Reference(Medication) ]
 fhir:MedicationStatement.subject[ Reference(Group|Patient) ]; # 1..1 Who is/was taking the medication
 fhir:MedicationStatement.context[ Reference(Encounter|EpisodeOfCare) ]; # 0..1 Encounter / Episode associated with MedicationStatement
 # MedicationStatement.effective[x]: 0..1 The date/time or interval when the medication is/was/will be taken. One of these 2
 fhir:MedicationStatement.effectiveDateTime[ dateTime ]
 fhir:MedicationStatement.effectivePeriod[ Period ]
 fhir:MedicationStatement.dateAsserted[ dateTime ]; # 0..1 When the statement was asserted?
 fhir:MedicationStatement.informationSource[ Reference(Organization|Patient|Practitioner|PractitionerRole|RelatedPerson) ]; # 0..1 Person or organization that provided the information about the taking of this medication
 fhir:MedicationStatement.derivedFrom[ Reference(Any) ], ... ; # 0..* Additional supporting information
 fhir:MedicationStatement.reasonCode[ CodeableConcept ], ... ; # 0..* Reason for why the medication is being/was taken
 fhir:MedicationStatement.reasonReference[ Reference(Condition|DiagnosticReport|Observation) ], ... ; # 0..* Condition or observation that supports why the medication is being/was taken
 fhir:MedicationStatement.note[ Annotation ], ... ; # 0..* Further information about the statement
 fhir:MedicationStatement.dosage[ Dosage ], ... ; # 0..* Details of how medication is/was taken or should be taken
]

Changes since R4

MedicationStatement

No Changes

See the Full Difference for further information

This analysis is available as XML or JSON.

Conversions between R3 and R4

See R3 <--> R4 Conversion Maps (status = 7 tests that all execute ok. 3 fail round-trip testing and 7 r3 resources are invalid (0 errors).)

Structure

Name	Flags	Card.	Type	Description & Constraints doco
.. MedicationStatement	TU	DomainResource	Record of medication being taken by a patient Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... identifier	Σ	0..*	Identifier	External identifier
... basedOn	Σ	0..*	Reference(MedicationRequest \| CarePlan \| ServiceRequest)	Fulfils plan, proposal or order
... partOf	Σ	0..*	Reference(MedicationAdministration \| MedicationDispense \| MedicationStatement \| Procedure \| Observation)	Part of referenced event
... status	?! Σ	1..1	code	active \| completed \| entered-in-error \| intended \| stopped \| on-hold \| unknown \| not-taken MedicationStatement Status Codes (Required)
... statusReason	0..*	CodeableConcept	Reason for current status SNOMED CT Drug Therapy Status codes (Example)
... category	Σ	0..1	CodeableConcept	Type of medication usage Medication usage category codes (Preferred)
... medication[x]	Σ	1..1	What medication was taken SNOMED CT Medication Codes (Example)
.... medicationCodeableConcept	CodeableConcept
.... medicationReference	Reference(Medication)
... subject	Σ	1..1	Reference(Patient \| Group)	Who is/was taking the medication
... context	Σ	0..1	Reference(Encounter \| EpisodeOfCare)	Encounter / Episode associated with MedicationStatement
... effective[x]	Σ	0..1	The date/time or interval when the medication is/was/will be taken
.... effectiveDateTime	dateTime
.... effectivePeriod	Period
... dateAsserted	Σ	0..1	dateTime	When the statement was asserted?
... informationSource	0..1	Reference(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Organization)	Person or organization that provided the information about the taking of this medication
... derivedFrom	0..*	Reference(Any)	Additional supporting information
... reasonCode	0..*	CodeableConcept	Reason for why the medication is being/was taken Condition/Problem/Diagnosis Codes (Example)
... reasonReference	0..*	Reference(Condition \| Observation \| DiagnosticReport)	Condition or observation that supports why the medication is being/was taken
... note	0..*	Annotation	Further information about the statement
... dosage	0..*	Dosage	Details of how medication is/was taken or should be taken
doco Documentation for this format

UML Diagram (Legend)

XML Template

<MedicationStatement 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|
 MedicationStatement|Observation|Procedure) Part of referenced event  --></partOf>
 <status value="[code ]"/><!-- 1..1 active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken  -->
 <statusReason><!-- 0..* CodeableConcept  Reason for current status  --></statusReason>
 <category><!-- 0..1 CodeableConcept  Type of medication usage  --></category>
 <medication[x]><!-- 1..1 CodeableConcept|Reference(Medication) What medication was taken  --></medication[x]>
 <subject><!-- 1..1 Reference(Group|Patient) Who is/was taking the medication  --></subject>
 <context><!-- 0..1 Reference(Encounter|EpisodeOfCare) Encounter / Episode associated with MedicationStatement  --></context>
 <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 statement 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) Additional supporting information  --></derivedFrom>
 <reasonCode><!-- 0..* CodeableConcept  Reason for why the medication is being/was taken  --></reasonCode>
 <reasonReference><!-- 0..* Reference(Condition|DiagnosticReport|Observation) Condition or observation that supports why the medication is being/was taken  --></reasonReference>
 <note><!-- 0..* Annotation  Further information about the statement  --></note>
 <dosage><!-- 0..* Dosage  Details of how medication is/was taken or should be taken  --></dosage>
</MedicationStatement>

JSON Template

{doco 
 "resourceType" : "MedicationStatement",
 // 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|
 MedicationStatement|Observation|Procedure) }], // Part of referenced event 
 "status" : "<code >", // R! active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken 
 "statusReason" : [{ CodeableConcept  }], // Reason for current status 
 "category" : { CodeableConcept  }, // Type of medication usage 
 // medication[x]: What medication was taken. One of these 2:
 "medicationCodeableConcept" : { CodeableConcept  },
 "medicationReference" : { Reference(Medication) },
 "subject" : { Reference(Group|Patient) }, // R! Who is/was taking the medication 
 "context" : { Reference(Encounter|EpisodeOfCare) }, // Encounter / Episode associated with MedicationStatement 
 // 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 statement 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) }], // Additional supporting information 
 "reasonCode" : [{ CodeableConcept  }], // Reason for why the medication is being/was taken 
 "reasonReference" : [{ Reference(Condition|DiagnosticReport|Observation) }], // Condition or observation that supports why the medication is being/was taken 
 "note" : [{ Annotation  }], // Further information about the statement 
 "dosage" : [{ Dosage  }] // Details of how medication is/was taken or should be taken 
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco 
[ a fhir:MedicationStatement;
 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:MedicationStatement.identifier[ Identifier ], ... ; # 0..* External identifier
 fhir:MedicationStatement.basedOn[ Reference(CarePlan|MedicationRequest|ServiceRequest) ], ... ; # 0..* Fulfils plan, proposal or order
 fhir:MedicationStatement.partOf[ Reference(MedicationAdministration|MedicationDispense|MedicationStatement|Observation|
 Procedure) ], ... ; # 0..* Part of referenced event
 fhir:MedicationStatement.status[ code ]; # 1..1 active | completed | entered-in-error | intended | stopped | on-hold | unknown | not-taken
 fhir:MedicationStatement.statusReason[ CodeableConcept ], ... ; # 0..* Reason for current status
 fhir:MedicationStatement.category[ CodeableConcept ]; # 0..1 Type of medication usage
 # MedicationStatement.medication[x]: 1..1 What medication was taken. One of these 2
 fhir:MedicationStatement.medicationCodeableConcept[ CodeableConcept ]
 fhir:MedicationStatement.medicationReference[ Reference(Medication) ]
 fhir:MedicationStatement.subject[ Reference(Group|Patient) ]; # 1..1 Who is/was taking the medication
 fhir:MedicationStatement.context[ Reference(Encounter|EpisodeOfCare) ]; # 0..1 Encounter / Episode associated with MedicationStatement
 # MedicationStatement.effective[x]: 0..1 The date/time or interval when the medication is/was/will be taken. One of these 2
 fhir:MedicationStatement.effectiveDateTime[ dateTime ]
 fhir:MedicationStatement.effectivePeriod[ Period ]
 fhir:MedicationStatement.dateAsserted[ dateTime ]; # 0..1 When the statement was asserted?
 fhir:MedicationStatement.informationSource[ Reference(Organization|Patient|Practitioner|PractitionerRole|RelatedPerson) ]; # 0..1 Person or organization that provided the information about the taking of this medication
 fhir:MedicationStatement.derivedFrom[ Reference(Any) ], ... ; # 0..* Additional supporting information
 fhir:MedicationStatement.reasonCode[ CodeableConcept ], ... ; # 0..* Reason for why the medication is being/was taken
 fhir:MedicationStatement.reasonReference[ Reference(Condition|DiagnosticReport|Observation) ], ... ; # 0..* Condition or observation that supports why the medication is being/was taken
 fhir:MedicationStatement.note[ Annotation ], ... ; # 0..* Further information about the statement
 fhir:MedicationStatement.dosage[ Dosage ], ... ; # 0..* Details of how medication is/was taken or should be taken
]

Changes since Release 4

MedicationStatement

No Changes

See the Full Difference for further information

This analysis is available as XML or JSON.

Conversions between R3 and R4

See R3 <--> R4 Conversion Maps (status = 7 tests that all execute ok. 3 fail round-trip testing and 7 r3 resources are invalid (0 errors).)

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

11.4.4.1 Terminology Bindings

Path	Definition	Type
MedicationStatement.status	Required	MedicationStatement Status Codes
MedicationStatement.statusReason	Example	SNOMEDCTDrugTherapyStatusCodes
MedicationStatement.category	Preferred	Medication usage category codes
MedicationStatement.medication[x]	Example	SNOMEDCTMedicationCodes
MedicationStatement.reasonCode	Example	Condition/Problem/DiagnosisCodes

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.

Name Type Description Expression In Common

category token Returns statements of this category of medicationstatement MedicationStatement.category

code token Return statements of this medication code (MedicationStatement.medication as CodeableConcept)

context reference Returns statements for a specific context (episode or episode of Care). MedicationStatement.context
(EpisodeOfCare, Encounter)

effective date Date when patient was taking (or not taking) the medication MedicationStatement.effective

identifier token Return statements with this external identifier MedicationStatement.identifier

medication reference Return statements of this medication reference (MedicationStatement.medication as Reference)
(Medication)

part-of reference Returns statements that are part of another event. MedicationStatement.partOf
(MedicationDispense, Observation, MedicationAdministration, Procedure, MedicationStatement)

patient reference Returns statements for a specific patient. MedicationStatement.subject.where(resolve() is Patient)
(Patient)

source reference Who or where the information in the statement came from MedicationStatement.informationSource
(Practitioner, Organization, Patient, PractitionerRole, RelatedPerson)

status token Return statements that match the given status MedicationStatement.status

subject reference The identity of a patient, animal or group to list statements for MedicationStatement.subject
(Group, Patient)