StructureDefinition UKCore-MedicationRequest

Canonical_URLStatusCurrent_VersionLast_UpdatedDescription
https://fhir.hl7.org.uk/StructureDefinition/UKCore-MedicationRequestactive2.5.02024-07-11

This profile defines the UK constraints and extensions on the International FHIR resource MedicationRequest.


Profile_Purpose

An order or request for both supply of the medication and the instructions for administration of the medication to an individual.

This profile covers inpatient medication orders as well as community orders (whether filled by the prescriber or by a pharmacy). It also includes orders for over-the-counter medications (e.g. Aspirin), total parenteral nutrition and diet/ vitamin supplements, and may be used to support the order of medication-related devices.

It is not intended for use in prescribing particular diets, or for ordering non-medication-related items (eyeglasses, supplies, etc).

idΣ0..1string
metaΣ0..1Meta
implicitRulesΣ ?!0..1uri
language0..1codeBinding
text0..1Narrative
contained0..*Resource
medicationRepeatInformationI0..1Extension(Complex)
modifierExtension?! I0..*Extension
identifierS0..*Identifier
statusS Σ ?!1..1codeBinding
statusReason0..1CodeableConcept
intentS Σ ?!1..1codeBinding
categoryS0..*CodeableConceptBinding
priorityΣ0..1codeBinding
doNotPerformΣ ?!0..1boolean
reportedBooleanboolean
reportedReferenceReference(Patient | Practitioner | PractitionerRole | RelatedPerson | Organization)
medicationCodeableConceptCodeableConcept
medicationReferenceReference(Medication)
subjectS Σ I1..1Reference(Patient | Group)
encounterI0..1Reference(Encounter)
supportingInformationI0..*Reference(Resource)
authoredOnS Σ0..1dateTime
requesterS Σ I0..1Reference(Practitioner | PractitionerRole | Organization | Patient | RelatedPerson | Device)
performerI0..1Reference(Practitioner | PractitionerRole | Organization | Patient | Device | RelatedPerson | CareTeam)
performerTypeΣ0..1CodeableConcept
recorderI0..1Reference(Practitioner | PractitionerRole)
reasonCode0..*CodeableConcept
reasonReferenceI0..*Reference(Condition | Observation)
instantiatesCanonicalΣ0..*canonical()
instantiatesUriΣ0..*uri
basedOnΣ I0..*Reference(CarePlan | MedicationRequest | ServiceRequest | ImmunizationRecommendation)
groupIdentifierΣ0..1Identifier
courseOfTherapyType0..1CodeableConceptBinding
insuranceI0..*Reference(Coverage | ClaimResponse)
note0..*Annotation
id0..1string
extensionI0..*Extension
modifierExtensionΣ ?! I0..*Extension
sequenceΣ0..1integer
textS Σ0..1string
additionalInstructionΣ0..*CodeableConcept
patientInstructionΣ0..1string
timingS Σ0..1Timing
asNeededBooleanboolean
asNeededCodeableConceptCodeableConcept
siteΣ0..1CodeableConceptBinding
routeΣ0..1CodeableConceptBinding
methodΣ0..1CodeableConceptBinding
id0..1string
extensionI0..*Extension
typeΣ0..1CodeableConcept
doseRangeRange
doseQuantitySimpleQuantity
rateRatioRatio
rateRangeRange
rateQuantitySimpleQuantity
maxDosePerPeriodΣ I0..1Ratio
maxDosePerAdministrationΣ I0..1SimpleQuantity
maxDosePerLifetimeΣ I0..1SimpleQuantity
id0..1string
extensionI0..*Extension
modifierExtensionΣ ?! I0..*Extension
id0..1string
extensionI0..*Extension
modifierExtensionΣ ?! I0..*Extension
quantityI0..1SimpleQuantity
durationI0..1Duration
dispenseIntervalI0..1Duration
validityPeriodI0..1Period
numberOfRepeatsAllowed0..1unsignedInt
quantityS I0..1SimpleQuantity
expectedSupplyDurationI0..1Duration
performerI0..1Reference(Organization)
id0..1string
extensionI0..*Extension
modifierExtensionΣ ?! I0..*Extension
allowedBooleanboolean
allowedCodeableConceptCodeableConcept
reason0..1CodeableConcept
priorPrescriptionI0..1Reference(MedicationRequest)
detectedIssueI0..*Reference(DetectedIssue)
eventHistoryI0..*Reference(Provenance)

Detailed Descriptions

MedicationRequest
DefinitionAn 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.
Cardinality0...*
AliasPrescription, Order
Invariants
  • dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources
    contained.contained.empty()
  • dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated
    contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
  • dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource
    contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
  • dom-6: A resource should have narrative for robust management
    text.`div`.exists()
  • dom-5: If a resource is contained in another resource, it SHALL NOT have a security label
    contained.meta.security.empty()
Mappings
  • rim: Entity. Role, or Act
  • workflow: Request
  • script10.6: Message/Body/NewRx
  • rim: CombinedMedicationRequest
MedicationRequest.id
DefinitionThe logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Cardinality0...1
Typestring
SummaryTrue
Comments

The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

MedicationRequest.meta
DefinitionThe metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
Cardinality0...1
TypeMeta
SummaryTrue
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.implicitRules
DefinitionA reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Cardinality0...1
Typeuri
ModifierTrue
SummaryTrue
Comments

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
MedicationRequest.language
DefinitionThe base language in which the resource is written.
Cardinality0...1
Typecode
Binding

A human language.

CommonLanguages (preferred)
Comments

Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
MedicationRequest.text
DefinitionA human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.
Cardinality0...1
TypeNarrative
Aliasnarrative, html, xhtml, display
Comments

Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: N/A
  • rim: Act.text?
MedicationRequest.contained
DefinitionThese resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.
Cardinality0...*
TypeResource
Aliasinline resources, anonymous resources, contained resources
Comments

This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

Mappings
  • rim: Entity. Role, or Act
  • rim: N/A
MedicationRequest.extension
DefinitionMay be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality0...*
TypeExtension
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.extension:medicationRepeatInformation
DefinitionMedication repeat information.
Cardinality0...1
TypeExtension(Complex)
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.modifierExtension
DefinitionMay be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality0...*
TypeExtension
ModifierTrue
Aliasextensions, user content
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.identifier
DefinitionIdentifiers associated with this medication request 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 server.
Cardinality0...*
TypeIdentifier
Must SupportTrue
Comments

This is a business identifier, not a resource identifier.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CX / EI (occasionally, more often EI maps to a resource id or a URL)
  • rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT]
  • servd: Identifier
  • workflow: Request.identifier
  • script10.6: Message/Header/PrescriberOrderNumber
  • w5: FiveWs.identifier
  • v2: ORC-2-Placer Order Number / ORC-3-Filler Order Number
  • rim: .id
MedicationRequest.status
DefinitionA code specifying the current state of the order. Generally, this will be active or completed state.
Cardinality1...1
Typecode
Binding

A coded concept specifying the state of the prescribing event. Describes the lifecycle of the prescription.

medicationrequest Status (required)
Must SupportTrue
ModifierTrue
SummaryTrue
Comments

This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • workflow: Request.status
  • script10.6: no mapping
  • w5: FiveWs.status
  • rim: .statusCode
MedicationRequest.statusReason
DefinitionCaptures the reason for the current state of the MedicationRequest.
Cardinality0...1
TypeCodeableConcept
Binding

Identifies the reasons for a given status.

medicationRequest Status Reason Codes (example)
Comments

This is generally only used for "exception" statuses such as "suspended" or "cancelled". The reason why the MedicationRequest was created at all is captured in reasonCode, not here.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • workflow: Request.statusReason
  • rim: .inboundRelationship[typeCode=SUBJ].source[classCode=CACT, moodCode=EVN].reasonCOde
MedicationRequest.intent
DefinitionWhether the request is a proposal, plan, or an original order.
Cardinality1...1
Typecode
Binding

The kind of medication order.

medicationRequest Intent (required)
Must SupportTrue
ModifierTrue
SummaryTrue
Comments

It is expected that the type of requester will be restricted for different stages of a MedicationRequest. For example, Proposals can be created by a patient, relatedPerson, Practitioner or Device. Plans can be created by Practitioners, Patients, RelatedPersons and Devices. Original orders can be created by a Practitioner only.

An instance-order is an instantiation of a request or order and may be used to populate Medication Administration Record.

This element is labeled as a modifier because the intent alters when and how the resource is actually applicable.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • workflow: Request.intent
  • w5: FiveWs.class
  • rim: .moodCode (nuances beyond PRP/PLAN/RQO would need to be elsewhere)
MedicationRequest.category
DefinitionIndicates the type of medication request (for example, where the medication is expected to be consumed or administered (i.e. inpatient or outpatient)).
Cardinality0...*
TypeCodeableConcept
Binding

A coded concept identifying the category of medication request. For example, where the medication is to be consumed or administered, or the type of medication treatment.

UKCoreMedicationRequestCategory (extensible)
Must SupportTrue
Comments

The category can be used to include where the medication is expected to be consumed or other types of requests.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • script10.6: Message/Body/NewRx/MedicationPrescribed/Directions or Message/Body/NewRx/MedicationPrescribed/StructuredSIG
  • w5: FiveWs.class
  • rim: .inboundRelationship[typeCode=COMP].source[classCode=OBS, moodCode=EVN, code="type of medication usage"].value
MedicationRequest.priority
DefinitionIndicates how quickly the Medication Request should be addressed with respect to other requests.
Cardinality0...1
Typecode
Binding

Identifies the level of importance to be assigned to actioning the request.

RequestPriority (required)
SummaryTrue
Comments

Note that FHIR strings SHALL NOT exceed 1MB in size

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • workflow: Request.priority
  • w5: FiveWs.grade
  • rim: .priorityCode
MedicationRequest.doNotPerform
DefinitionIf true indicates that the provider is asking for the medication request not to occur.
Cardinality0...1
Typeboolean
ModifierTrue
SummaryTrue
Comments

If do not perform is not specified, the request is a positive request e.g. "do perform".

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: SubstanceAdministration.actionNegationInd
MedicationRequest.reported[x]
DefinitionIndicates if this record was captured as a secondary 'reported' record rather than as an original primary source-of-truth record. It may also indicate the source of the report.
Cardinality0...1
Typeboolean
SummaryTrue
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: .participation[typeCode=INF].role
MedicationRequest.medication[x]
DefinitionIdentifies the medication being requested. This is a link to a resource that represents the medication which may be the details of the medication or simply an attribute carrying a code that identifies the medication from a known list of medications.
Cardinality1...1
TypeCodeableConcept
Binding

A coded concept identifying substance or product that can be ordered.

UKCoreMedicationCode (preferred)
Must SupportTrue
SummaryTrue
Comments

If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the Medication resource is recommended. For example, if you require form or lot number or if the medication is compounded or extemporaneously prepared, then you must reference the Medication resource.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • workflow: Request.code
  • script10.6: Message/Body/NewRx/MedicationPrescribed Medication.code.coding.code = Message/Body/NewRx/MedicationPrescribed/DrugCoded/ProductCode Medication.code.coding.system = Message/Body/NewRx/MedicationPrescribed/DrugCoded/ProductCodeQualifier Medication.code.coding.display = Message/Body/NewRx/MedicationPrescribed/DrugDescription
  • w5: FiveWs.what[x]
  • v2: RXE-2-Give Code / RXO-1-Requested Give Code / RXC-2-Component Code
  • rim: consumable.administrableMedication
MedicationRequest.subject
DefinitionA link to a resource representing the person or set of individuals to whom the medication will be given.
Cardinality1...1
TypeReference(Patient | Group)
Must SupportTrue
SummaryTrue
Comments

The subject on a medication request is mandatory. For the secondary use case where the actual subject is not provided, there still must be an anonymized subject specified.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.subject
  • script10.6: Message/Body/NewRx/Patient (need detail to link to specific patient … Patient.Identification in SCRIPT)
  • w5: FiveWs.subject[x]
  • v2: PID-3-Patient ID List
  • rim: .participation[typeCode=AUT].role
  • w5: FiveWs.subject
MedicationRequest.encounter
DefinitionThe Encounter during which this [x] was created or to which the creation of this record is tightly associated.
Cardinality0...1
TypeReference(Encounter)
Comments

This will typically be the encounter the event occurred within, but some activities may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter." If there is a need to link to episodes of care they will be handled with an extension.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.context
  • script10.6: no mapping
  • w5: FiveWs.context
  • v2: PV1-19-Visit Number
  • rim: .inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN, code="type of encounter or episode"]
MedicationRequest.supportingInformation
DefinitionInclude additional information (for example, patient height and weight) that supports the ordering of the medication.
Cardinality0...*
TypeReference(Resource)
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.supportingInfo
  • w5: FiveWs.context
  • rim: .outboundRelationship[typeCode=PERT].target[A_SupportingClinicalStatement CMET minimal with many different choices of classCodes(ORG, ENC, PROC, SPLY, SBADM, OBS) and each of the act class codes draws from one or more of the following moodCodes (EVN, DEF, INT PRMS, RQO, PRP, APT, ARQ, GOL)]
MedicationRequest.authoredOn
DefinitionThe date (and perhaps time) when the prescription was initially written or authored on.
Cardinality0...1
TypedateTime
Must SupportTrue
SummaryTrue
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • workflow: Request.authoredOn
  • script10.6: Message/Body/NewRx/MedicationPrescribed/WrittenDate
  • w5: FiveWs.recorded
  • v2: RXE-32-Original Order Date/Time / ORC-9-Date/Time of Transaction
  • rim: author.time
MedicationRequest.requester
DefinitionThe individual, organization, or device that initiated the request and has responsibility for its activation.
Cardinality0...1
TypeReference(Practitioner | PractitionerRole | Organization | Patient | RelatedPerson | Device)
Must SupportTrue
SummaryTrue
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.requester
  • w5: FiveWs.author
  • rim: .participation[typeCode=AUT].role
MedicationRequest.performer
DefinitionThe specified desired performer of the medication treatment (e.g. the performer of the medication administration).
Cardinality0...1
TypeReference(Practitioner | PractitionerRole | Organization | Patient | Device | RelatedPerson | CareTeam)
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.performer
  • w5: FiveWs.actor
  • rim: .participation[typeCode=PRF].role[scoper.determinerCode=INSTANCE]
MedicationRequest.performerType
DefinitionIndicates the type of performer of the administration of the medication.
Cardinality0...1
TypeCodeableConcept
Binding

Identifies the type of individual that is desired to administer the medication.

ProcedurePerformerRoleCodes (example)
SummaryTrue
Comments

If specified without indicating a performer, this indicates that the performer must be of the specified type. If specified with a performer then it indicates the requirements of the performer if the designated performer is not available.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • workflow: Request.performerType
  • rim: .participation[typeCode=PRF].role[scoper.determinerCode=KIND].code
MedicationRequest.recorder
DefinitionThe person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Cardinality0...1
TypeReference(Practitioner | PractitionerRole)
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • w5: FiveWs.who
  • rim: .participation[typeCode=TRANS].role[classCode=ASSIGNED].code (HealthcareProviderType)
MedicationRequest.reasonCode
DefinitionThe reason or the indication for ordering or not ordering the medication.
Cardinality0...*
TypeCodeableConcept
Binding

A coded concept indicating why the medication was ordered.

Condition/Problem/DiagnosisCodes (example)
Comments

This could be a diagnosis code. If a full condition record exists or additional detail is needed, use reasonReference.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • workflow: Request.reasonCode
  • script10.6: Message/Body/NewRx/MedicationPrescribed/Diagnosis/Primary/Value
  • w5: FiveWs.why[x]
  • v2: ORC-16-Order Control Code Reason /RXE-27-Give Indication/RXO-20-Indication / RXD-21-Indication / RXG-22-Indication / RXA-19-Indication
  • rim: reason.observation.reasonCode
MedicationRequest.reasonReference
DefinitionCondition or observation that supports why the medication was ordered.
Cardinality0...*
TypeReference(Condition | Observation)
Comments

This is a reference to a condition or observation that is the reason for the medication order. If only a code exists, use reasonCode.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.reasonReference
  • script10.6: no mapping
  • w5: FiveWs.why[x]
  • rim: reason.observation[code=ASSERTION].value
MedicationRequest.instantiatesCanonical
DefinitionThe URL pointing to a protocol, guideline, orderset, or other definition that is adhered to in whole or in part by this MedicationRequest.
Cardinality0...*
Typecanonical()
SummaryTrue
Comments

see Canonical References

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • workflow: Request.instantiates
  • rim: .outboundRelationship[typeCode=DEFN].target
MedicationRequest.instantiatesUri
DefinitionThe URL pointing to an externally maintained protocol, guideline, orderset or other definition that is adhered to in whole or in part by this MedicationRequest.
Cardinality0...*
Typeuri
SummaryTrue
Comments

see http://en.wikipedia.org/wiki/Uniform_resource_identifier

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: .outboundRelationship[typeCode=DEFN].target
MedicationRequest.basedOn
DefinitionA plan or request that is fulfilled in whole or in part by this medication request.
Cardinality0...*
TypeReference(CarePlan | MedicationRequest | ServiceRequest | ImmunizationRecommendation)
SummaryTrue
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.basedOn
  • rim: .outboundRelationship[typeCode=FLFS].target[classCode=SBADM or PROC or PCPR or OBS, moodCode=RQO orPLAN or PRP]
MedicationRequest.groupIdentifier
DefinitionA shared identifier common to all requests that were authorized more or less simultaneously by a single author, representing the identifier of the requisition or prescription.
Cardinality0...1
TypeIdentifier
SummaryTrue
Requirements

Requests are linked either by a "basedOn" relationship (i.e. one request is fulfilling another) or by having a common requisition. Requests that are part of the same requisition are generally treated independently from the perspective of changing their state or maintaining them after initial creation.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CX / EI (occasionally, more often EI maps to a resource id or a URL)
  • rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT]
  • servd: Identifier
  • workflow: Request.groupIdentifier
  • rim: .outboundRelationship(typeCode=COMP].target[classCode=SBADM, moodCode=INT].id
MedicationRequest.courseOfTherapyType
DefinitionThe description of the course of therapy for a medication request.
Cardinality0...1
TypeCodeableConcept
Binding

Identifies the overall pattern of medication administratio.

UKCoreMedicationRequestCourseOfTherapy (extensible)
Comments

This attribute should not be confused with the protocol of the medication.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • rim: Act.code where classCode = LIST and moodCode = EVN
MedicationRequest.insurance
DefinitionInsurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be required for delivering the requested service.
Cardinality0...*
TypeReference(Coverage | ClaimResponse)
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.insurance
  • rim: .outboundRelationship[typeCode=COVBY].target
MedicationRequest.note
DefinitionExtra information about the prescription that could not be conveyed by the other attributes.
Cardinality0...*
TypeAnnotation
Comments

For systems that do not have structured annotations, they can simply communicate a single annotation with no author or time. This element may need to be included in narrative because of the potential for modifying information. Annotations SHOULD NOT be used to communicate "modifying" information that could be computable. (This is a SHOULD because enforcing user behavior is nearly impossible).

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: N/A
  • rim: Act
  • workflow: Request.note
  • script10.6: Message/Body/NewRx/MedicationPrescribed/Note
  • rim: .inboundRelationship[typeCode=SUBJ]/source[classCode=OBS,moodCode=EVN,code="annotation"].value
MedicationRequest.dosageInstruction
DefinitionIndicates how the medication is to be used by the patient.
Cardinality0...*
TypeDosage
Must SupportTrue
Comments

There are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose. For example, "Ondansetron 8mg orally or IV twice a day as needed for nausea" or "Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting". In these cases, two medication requests would be created that could be grouped together. The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: .outboundRelationship[typeCode=COMP].target[classCode=SBADM, moodCode=INT]
  • workflow: Request.occurrence[x]
  • rim: see dosageInstruction mapping
MedicationRequest.dosageInstruction.id
DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality0...1
Typestring
Mappings
  • rim: n/a
MedicationRequest.dosageInstruction.extension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality0...*
TypeExtension
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dosageInstruction.modifierExtension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality0...*
TypeExtension
ModifierTrue
SummaryTrue
Aliasextensions, user content, modifiers
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dosageInstruction.sequence
DefinitionIndicates the order in which the dosage instructions should be applied or interpreted.
Cardinality0...1
Typeinteger
SummaryTrue
Requirements

If the sequence number of multiple Dosages is the same, then it is implied that the instructions are to be treated as concurrent. If the sequence number is different, then the Dosages are intended to be sequential.

Comments

32 bit number; for values larger than this, use decimal

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: TQ1-1
  • rim: .text
MedicationRequest.dosageInstruction.text
DefinitionFree text dosage instructions e.g. SIG.
Cardinality0...1
Typestring
Must SupportTrue
SummaryTrue
Requirements

Free text dosage instructions can be used for cases where the instructions are too complex to code. The content of this attribute does not include the name or description of the medication. When coded instructions are present, the free text instructions may still be present for display to humans taking or administering the medication. It is expected that the text instructions will always be populated. If the dosage.timing attribute is also populated, then the dosage.text should reflect the same information as the timing. Additional information about administration or preparation of the medication should be included as text.

Comments

Note that FHIR strings SHALL NOT exceed 1MB in size

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: RXO-6; RXE-21
  • rim: .text
MedicationRequest.dosageInstruction.additionalInstruction
DefinitionSupplemental instructions to the patient on how to take the medication (e.g. "with meals" or"take half to one hour before food") or warnings for the patient about the medication (e.g. "may cause drowsiness" or "avoid exposure of skin to direct sunlight or sunlamps").
Cardinality0...*
TypeCodeableConcept
Binding

A coded concept identifying additional instructions such as "take with water" or "avoid operating heavy machinery".

SNOMEDCTAdditionalDosageInstructions (example)
SummaryTrue
Requirements

Additional instruction is intended to be coded, but where no code exists, the element could include text. For example, "Swallow with plenty of water" which might or might not be coded.

Comments

Information about administration or preparation of the medication (e.g. "infuse as rapidly as possibly via intraperitoneal port" or "immediately following drug x") should be populated in dosage.text.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • v2: RXO-7
  • rim: .text
MedicationRequest.dosageInstruction.patientInstruction
DefinitionInstructions in terms that are understood by the patient or consumer.
Cardinality0...1
Typestring
SummaryTrue
Comments

Note that FHIR strings SHALL NOT exceed 1MB in size

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: RXO-7
  • rim: .text
MedicationRequest.dosageInstruction.timing
DefinitionWhen medication should be administered.
Cardinality0...1
TypeTiming
Must SupportTrue
SummaryTrue
Requirements

The timing schedule for giving the medication to the patient. This data type allows many different expressions. For example: "Every 8 hours"; "Three times a day"; "1/2 an hour before breakfast for 10 days from 23-Dec 2011:"; "15 Oct 2013, 17 Oct 2013 and 1 Nov 2013". Sometimes, a rate can imply duration when expressed as total volume / duration (e.g. 500mL/2 hours implies a duration of 2 hours). However, when rate doesn't imply duration (e.g. 250mL/hour), then the timing.repeat.duration is needed to convey the infuse over time period.

Comments

This attribute might not always be populated while the Dosage.text is expected to be populated. If both are populated, then the Dosage.text should reflect the content of the Dosage.timing.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: N/A
  • rim: QSET<TS> (GTS)
  • rim: .effectiveTime
MedicationRequest.dosageInstruction.asNeeded[x]
DefinitionIndicates whether the Medication is only taken when needed within a specific dosing schedule (Boolean option), or it indicates the precondition for taking the Medication (CodeableConcept).
Cardinality0...1
Typeboolean
Binding

A coded concept identifying the precondition that should be met or evaluated prior to consuming or administering a medication dose. For example "pain", "30 minutes prior to sexual intercourse", "on flare-up" etc.

SNOMEDCTMedicationAsNeededReasonCodes (preferred)
SummaryTrue
Comments

Can express "as needed" without a reason by setting the Boolean = True. In this case the CodeableConcept is not populated. Or you can express "as needed" with a reason by including the CodeableConcept. In this case the Boolean is assumed to be True. If you set the Boolean to False, then the dose is given according to the schedule and is not "prn" or "as needed".

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: TQ1-9
  • rim: .outboundRelationship[typeCode=PRCN].target[classCode=OBS, moodCode=EVN, code="as needed"].value=boolean or codable concept
MedicationRequest.dosageInstruction.site
DefinitionBody site to administer to.
Cardinality0...1
TypeCodeableConcept
Binding

A coded concept describing the site location the medicine enters into or onto the body.

UKCoreBodySite (preferred)
SummaryTrue
Requirements

A coded specification of the anatomic site where the medication first enters the body.

Comments

If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension bodySite. May be a summary code, or a reference to a very precise definition of the location, or both.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • v2: RXR-2
  • rim: .approachSiteCode
MedicationRequest.dosageInstruction.route
DefinitionHow drug should enter body.
Cardinality0...1
TypeCodeableConcept
Binding

A coded concept describing the route or physiological path of administration of a therapeutic agent into or onto the body of a subject.

UKCoreSubstanceOrProductAdministrationRoute (preferred)
SummaryTrue
Requirements

A code specifying the route or physiological path of administration of a therapeutic agent into or onto a patient's body.

Comments

Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • v2: RXR-1
  • rim: .routeCode
MedicationRequest.dosageInstruction.method
DefinitionTechnique for administering medication.
Cardinality0...1
TypeCodeableConcept
Binding

A coded concept describing the technique by which the medicine is administered.

UKCoreMedicationDosageMethod (preferred)
SummaryTrue
Requirements

A coded value indicating the method by which the medication is introduced into or onto the body. Most commonly used for injections. For examples, Slow Push; Deep IV.

Comments

Terminologies used often pre-coordinate this term with the route and or form of administration.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • v2: RXR-4
  • rim: .doseQuantity
MedicationRequest.dosageInstruction.doseAndRate
DefinitionThe amount of medication administered.
Cardinality0...*
TypeElement
Must SupportTrue
SummaryTrue
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: TQ1-2
MedicationRequest.dosageInstruction.doseAndRate.id
DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality0...1
Typestring
Mappings
  • rim: n/a
MedicationRequest.dosageInstruction.doseAndRate.extension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality0...*
TypeExtension
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dosageInstruction.doseAndRate.type
DefinitionThe kind of dose or rate specified, for example, ordered or calculated.
Cardinality0...1
TypeCodeableConcept
Binding

The kind of dose or rate specified.

DoseAndRateType (example)
SummaryTrue
Requirements

If the type is not populated, assume to be "ordered".

Comments

Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • v2: RXO-21; RXE-23
MedicationRequest.dosageInstruction.doseAndRate.dose[x]
DefinitionAmount of medication per dose.
Cardinality0...1
TypeRange
Must SupportTrue
SummaryTrue
Requirements

The amount of therapeutic or other substance given at one administration event.

Comments

Note that this specifies the quantity of the specified medication, not the quantity for each active ingredient(s). Each ingredient amount can be communicated in the Medication resource. For example, if one wants to communicate that a tablet was 375 mg, where the dose was one tablet, you can use the Medication resource to document that the tablet was comprised of 375 mg of drug XYZ. Alternatively if the dose was 375 mg, then you may only need to use the Medication resource to indicate this was a tablet. If the example were an IV such as dopamine and you wanted to communicate that 400mg of dopamine was mixed in 500 ml of some IV solution, then this would all be communicated in the Medication resource. If the administration is not intended to be instantaneous (rate is present or timing has a duration), this can be specified to convey the total amount to be administered over the period of time as indicated by the schedule e.g. 500 ml in dose, with timing used to convey that this should be done over 4 hours.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: RXO-2, RXE-3
  • rim: .doseQuantity
MedicationRequest.dosageInstruction.doseAndRate.rate[x]
DefinitionAmount of medication per unit of time.
Cardinality0...1
TypeRatio
Must SupportTrue
SummaryTrue
Requirements

Identifies the speed with which the medication was or will be introduced into the patient. Typically the rate for an infusion e.g. 100 ml per 1 hour or 100 ml/hr. May also be expressed as a rate per unit of time e.g. 500 ml per 2 hours. Other examples: 200 mcg/min or 200 mcg/1 minute; 1 liter/8 hours. Sometimes, a rate can imply duration when expressed as total volume / duration (e.g. 500mL/2 hours implies a duration of 2 hours). However, when rate doesn't imply duration (e.g. 250mL/hour), then the timing.repeat.duration is needed to convey the infuse over time period.

Comments

It is possible to supply both a rate and a doseQuantity to provide full details about how the medication is to be administered and supplied. If the rate is intended to change over time, depending on local rules/regulations, each change should be captured as a new version of the MedicationRequest with an updated rate, or captured with a new MedicationRequest with the new rate.

It is possible to specify a rate over time (for example, 100 ml/hour) using either the rateRatio and rateQuantity. The rateQuantity approach requires systems to have the capability to parse UCUM grammer where ml/hour is included rather than a specific ratio where the time is specified as the denominator. Where a rate such as 500ml over 2 hours is specified, the use of rateRatio may be more semantically correct than specifying using a rateQuantity of 250 mg/hour.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: RXE22, RXE23, RXE-24
  • rim: .rateQuantity
MedicationRequest.dosageInstruction.maxDosePerPeriod
DefinitionUpper limit on medication per unit of time.
Cardinality0...1
TypeRatio
SummaryTrue
Requirements

The maximum total quantity of a therapeutic substance that may be administered to a subject over the period of time. For example, 1000mg in 24 hours.

Comments

This is intended for use as an adjunct to the dosage when there is an upper cap. For example "2 tablets every 4 hours to a maximum of 8/day".

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • rat-1: Numerator and denominator SHALL both be present, or both are absent. If both are absent, there SHALL be some extension present
    (numerator.empty() xor denominator.exists()) and (numerator.exists() or extension.exists())
Mappings
  • rim: n/a
  • v2: N/A
  • rim: RTO
  • v2: RXO-23, RXE-19
  • rim: .maxDoseQuantity
MedicationRequest.dosageInstruction.maxDosePerAdministration
DefinitionUpper limit on medication per administration.
Cardinality0...1
TypeSimpleQuantity
SummaryTrue
Requirements

The maximum total quantity of a therapeutic substance that may be administered to a subject per administration.

Comments

This is intended for use as an adjunct to the dosage when there is an upper cap. For example, a body surface area related dose with a maximum amount, such as 1.5 mg/m2 (maximum 2 mg) IV over 5 – 10 minutes would have doseQuantity of 1.5 mg/m2 and maxDosePerAdministration of 2 mg.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • sqty-1: The comparator is not used on a SimpleQuantity
    comparator.empty()
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • rim: not supported
MedicationRequest.dosageInstruction.maxDosePerLifetime
DefinitionUpper limit on medication per lifetime of the patient.
Cardinality0...1
TypeSimpleQuantity
SummaryTrue
Requirements

The maximum total quantity of a therapeutic substance that may be administered per lifetime of the subject.

Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • sqty-1: The comparator is not used on a SimpleQuantity
    comparator.empty()
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • rim: not supported
MedicationRequest.dispenseRequest
DefinitionIndicates the specific details for the dispense or medication supply part of a medication request (also known as a Medication Prescription or Medication Order). Note that this information is not always sent with the order. There may be in some settings (e.g. hospitals) institutional or system support for completing the dispense details in the pharmacy department.
Cardinality0...1
TypeBackboneElement
Must SupportTrue
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • script10.6: Message/Body/NewRx/MedicationPrescribed/ExpirationDate
  • rim: component.supplyEvent
MedicationRequest.dispenseRequest.id
DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality0...1
Typestring
Mappings
  • rim: n/a
MedicationRequest.dispenseRequest.extension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality0...*
TypeExtension
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dispenseRequest.modifierExtension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality0...*
TypeExtension
ModifierTrue
SummaryTrue
Aliasextensions, user content, modifiers
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dispenseRequest.initialFill
DefinitionIndicates the quantity or duration for the first dispense of the medication.
Cardinality0...1
TypeBackboneElement
Comments

If populating this element, either the quantity or the duration must be included.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • rim: SubstanceAdministration -> ActRelationship[sequenceNumber = '1'] -> Supply
MedicationRequest.dispenseRequest.initialFill.id
DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality0...1
Typestring
Mappings
  • rim: n/a
MedicationRequest.dispenseRequest.initialFill.extension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality0...*
TypeExtension
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dispenseRequest.initialFill.modifierExtension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality0...*
TypeExtension
ModifierTrue
SummaryTrue
Aliasextensions, user content, modifiers
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.dispenseRequest.initialFill.quantity
DefinitionThe amount or quantity to provide as part of the first dispense.
Cardinality0...1
TypeSimpleQuantity
Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • sqty-1: The comparator is not used on a SimpleQuantity
    comparator.empty()
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • rim: Supply.quantity[moodCode=RQO]
MedicationRequest.dispenseRequest.initialFill.duration
DefinitionThe length of time that the first dispense is expected to last.
Cardinality0...1
TypeDuration
Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • drt-1: There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM.
    code.exists() implies ((system = %ucum) and value.exists())
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • rim: PQ, IVL<PQ> depending on the values
  • rim: Supply.effectivetime[moodCode=RQO]
MedicationRequest.dispenseRequest.dispenseInterval
DefinitionThe minimum period of time that must occur between dispenses of the medication.
Cardinality0...1
TypeDuration
Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • drt-1: There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM.
    code.exists() implies ((system = %ucum) and value.exists())
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • rim: PQ, IVL<PQ> depending on the values
  • rim: Supply.effectivetime[moodCode=RQO]
MedicationRequest.dispenseRequest.validityPeriod
DefinitionThis indicates the validity period of a prescription (stale dating the Prescription).
Cardinality0...1
TypePeriod
Requirements

Indicates when the Prescription becomes valid, and when it ceases to be a dispensable Prescription.

Comments

It reflects the prescribers' perspective for the validity of the prescription. Dispenses must not be made against the prescription outside of this period. The lower-bound of the Dispensing Window signifies the earliest date that the prescription can be filled for the first time. If an upper-bound is not specified then the Prescription is open-ended or will default to a stale-date based on regulations.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • per-1: If present, start SHALL have a lower value than end
    start.hasValue().not() or end.hasValue().not() or (start <= end)
Mappings
  • rim: n/a
  • v2: DR
  • rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"]
  • script10.6: Message/Body/NewRx/MedicationPrescribed/Refills
  • rim: effectiveTime
MedicationRequest.dispenseRequest.numberOfRepeatsAllowed
DefinitionAn integer indicating the number of times, in addition to the original dispense, (aka refills or repeats) that the patient can receive the prescribed medication. Usage Notes: This integer does not include the original order dispense. This means that if an order indicates dispense 30 tablets plus "3 repeats", then the order can be dispensed a total of 4 times and the patient can receive a total of 120 tablets. A prescriber may explicitly say that zero refills are permitted after the initial dispense.
Cardinality0...1
TypeunsignedInt
Comments

If displaying "number of authorized fills", add 1 to this number.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • script10.6: Message/Body/NewRx/MedicationPrescribed/Quantity
  • v2: RXE-12-Number of Refills
  • rim: repeatNumber
MedicationRequest.dispenseRequest.quantity
DefinitionThe amount that is to be dispensed for one fill.
Cardinality0...1
TypeSimpleQuantity
Must SupportTrue
Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • sqty-1: The comparator is not used on a SimpleQuantity
    comparator.empty()
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • script10.6: Message/Body/NewRx/MedicationPrescribed/DaysSupply
  • v2: RXD-4-Actual Dispense Amount / RXD-5.1-Actual Dispense Units.code / RXD-5.3-Actual Dispense Units.name of coding system
  • rim: quantity
MedicationRequest.dispenseRequest.expectedSupplyDuration
DefinitionIdentifies the period time over which the supplied product is expected to be used, or the length of time the dispense is expected to last.
Cardinality0...1
TypeDuration
Comments

In some situations, this attribute may be used instead of quantity to identify the amount supplied by how long it is expected to last, rather than the physical quantity issued, e.g. 90 days supply of medication (based on an ordered dosage). When possible, it is always better to specify quantity, as this tends to be more precise. expectedSupplyDuration will always be an estimate that can be influenced by external factors.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • qty-3: If a code for the unit is present, the system SHALL also be present
    code.empty() or system.exists()
  • drt-1: There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM.
    code.exists() implies ((system = %ucum) and value.exists())
Mappings
  • rim: n/a
  • v2: SN (see also Range) or CQ
  • rim: PQ, IVL<PQ>, MO, CO, depending on the values
  • rim: PQ, IVL<PQ> depending on the values
  • script10.6: Message/Body/NewRx/MedicationPrescribed/Substitutions
  • rim: expectedUseTime
MedicationRequest.dispenseRequest.performer
DefinitionIndicates the intended dispensing Organization specified by the prescriber.
Cardinality0...1
TypeReference(Organization)
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • w5: FiveWs.who
  • rim: .outboundRelationship[typeCode=COMP].target[classCode=SPLY, moodCode=RQO] .participation[typeCode=PRF].role[scoper.determinerCode=INSTANCE]
MedicationRequest.substitution
DefinitionIndicates whether or not substitution can or should be part of the dispense. In some cases, substitution must happen, in other cases substitution must not happen. This block explains the prescriber's intent. If nothing is specified substitution may be done.
Cardinality1...1
TypeBackboneElement
Must SupportTrue
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • script10.6: specific values within Message/Body/NewRx/MedicationPrescribed/Substitutions
  • rim: subjectOf.substitutionPersmission
MedicationRequest.substitution.id
DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality0...1
Typestring
Mappings
  • rim: n/a
MedicationRequest.substitution.extension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality0...*
TypeExtension
Aliasextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

SlicingUnordered, Open, by url(Value)
Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.substitution.modifierExtension
DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality0...*
TypeExtension
ModifierTrue
SummaryTrue
Aliasextensions, user content, modifiers
Requirements

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ext-1: Must have either extensions or value[x], not both
    extension.exists() != value.exists()
Mappings
  • rim: n/a
  • rim: N/A
MedicationRequest.substitution.allowed[x]
DefinitionThe purpose of this element is to allow the prescriber to dispense a different drug from what was prescribed.
Cardinality1...1
Typeboolean
Binding

Identifies the type of substitution allowed.

v3.ActSubstanceAdminSubstitutionCode (example)
Comments

This element is labeled as a modifier because whether substitution is allow or not, it cannot be ignored.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • script10.6: specific values within Message/Body/NewRx/MedicationPrescribed/Substitutions
  • v2: RXO-9-Allow Substitutions / RXE-9-Substitution Status
  • rim: code
MedicationRequest.substitution.reason
DefinitionIndicates the reason for the substitution, or why substitution must or must not be performed.
Cardinality0...1
TypeCodeableConcept
Binding

A coded concept describing the reason that a different medication should (or should not) be substituted from what was prescribed.

v3.SubstanceAdminSubstitutionReason (example)
Comments

Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
Mappings
  • rim: n/a
  • v2: CE/CNE/CWE
  • rim: CD
  • orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
  • script10.6: not mapped
  • v2: RXE-9 Substition status
  • rim: reasonCode
MedicationRequest.priorPrescription
DefinitionA link to a resource representing an earlier order related order or prescription.
Cardinality0...1
TypeReference(MedicationRequest)
Comments

References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.replaces
  • script10.6: not mapped
  • rim: .outboundRelationship[typeCode=?RPLC or ?SUCC]/target[classCode=SBADM,moodCode=RQO]
MedicationRequest.detectedIssue
DefinitionIndicates an actual or potential clinical issue with or between one or more active or proposed clinical actions for a patient; e.g. Drug-drug interaction, duplicate therapy, dosage alert etc.
Cardinality0...*
TypeReference(DetectedIssue)
AliasContraindication, Drug Utilization Review (DUR), Alert
Comments

This element can include a detected issue that has been identified either by a decision support system or by a clinician and may include information on the steps that were taken to address the issue.

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • rim: .inboundRelationship[typeCode=SUBJ]/source[classCode=ALRT,moodCode=EVN].value
MedicationRequest.eventHistory
DefinitionLinks to Provenance records for past versions of this resource or fulfilling request or event resources that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the resource.
Cardinality0...*
TypeReference(Provenance)
Comments

This might not include provenances for all versions of the request – only those deemed “relevant” or important. This SHALL NOT include the provenance associated with this current version of the resource. (If that provenance is deemed to be a “relevant” change, it will need to be added as part of a later update. Until then, it can be queried directly as the provenance that points to this version using _revinclude All Provenances should have some historical version of this Request as their subject.).

Invariants
  • ele-1: All FHIR elements must have a @value or children
    hasValue() or (children().count() > id.count())
  • ref-1: SHALL have a contained resource if a local reference is provided
    reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))
Mappings
  • rim: n/a
  • rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
  • workflow: Request.relevantHistory
  • rim: .inboundRelationship(typeCode=SUBJ].source[classCode=CACT, moodCode=EVN]

Table View

MedicationRequest..
MedicationRequest.extensionExtension..
MedicationRequest.identifier..
MedicationRequest.status..
MedicationRequest.intent..
MedicationRequest.category..
MedicationRequest.medication[x]..
MedicationRequest.subject..
MedicationRequest.authoredOn..
MedicationRequest.requester..
MedicationRequest.courseOfTherapyType..
MedicationRequest.dosageInstruction..
MedicationRequest.dosageInstruction.text..
MedicationRequest.dosageInstruction.timing..
MedicationRequest.dosageInstruction.asNeeded[x]..
MedicationRequest.dosageInstruction.site..
MedicationRequest.dosageInstruction.route..
MedicationRequest.dosageInstruction.method..
MedicationRequest.dosageInstruction.doseAndRate..
MedicationRequest.dosageInstruction.doseAndRate.dose[x]..
MedicationRequest.dosageInstruction.doseAndRate.rate[x]..
MedicationRequest.dispenseRequest..
MedicationRequest.dispenseRequest.quantity..
MedicationRequest.substitution1..
MedicationRequest.substitution.allowed[x]..

XML View

<StructureDefinition xmlns="http://hl7.org/fhir">
    <id value="UKCore-MedicationRequest" />
    <url value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-MedicationRequest" />
    <version value="2.5.0" />
    <name value="UKCoreMedicationRequest" />
    <title value="UK Core Medication Request" />
    <status value="active" />
    <date value="2024-07-11" />
    <publisher value="HL7 UK" />
    <contact>
        <name value="HL7 UK" />
        <telecom>
            <system value="email" />
            <value value="ukcore@hl7.org.uk" />
            <use value="work" />
            <rank value="1" />
        </telecom>
    </contact>
    <description value="This profile defines the UK constraints and extensions on the International FHIR resource [MedicationRequest](https://hl7.org/fhir/R4/MedicationRequest.html)." />
    <purpose value="An order or request for both supply of the medication and the instructions for administration of the medication to an individual. \n\nThis profile covers inpatient medication orders as well as community orders (whether filled by the prescriber or by a pharmacy). It also includes orders for over-the-counter medications (e.g. Aspirin), total parenteral nutrition and diet/ vitamin supplements, and may be used to support the order of medication-related devices. \n\nIt is not intended for use in prescribing particular diets, or for ordering non-medication-related items (eyeglasses, supplies, etc)." />
    <copyright value="Copyright &#169; 2021+ HL7 UK Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); you may not use this file except in compliance with the License. You may obtain a copy of the License at  http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. HL7&#174; FHIR&#174; standard Copyright &#169; 2011+ HL7 The HL7&#174; FHIR&#174; standard is used under the FHIR license. You may obtain a copy of the FHIR license at  https://www.hl7.org/fhir/license.html." />
    <fhirVersion value="4.0.1" />
    <kind value="resource" />
    <abstract value="false" />
    <type value="MedicationRequest" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/MedicationRequest" />
    <derivation value="constraint" />
    <differential>
        <element id="MedicationRequest.extension:medicationRepeatInformation">
            <path value="MedicationRequest.extension" />
            <sliceName value="medicationRepeatInformation" />
            <short value="Allows the resource to be referenced within / by other resources." />
            <type>
                <code value="Extension" />
                <profile value="https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-MedicationRepeatInformation" />
            </type>
        </element>
        <element id="MedicationRequest.identifier">
            <path value="MedicationRequest.identifier" />
            <short value="Allows the resource to be referenced within / by other resources." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.status">
            <path value="MedicationRequest.status" />
            <short value="A code specifying the current state of the order." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.intent">
            <path value="MedicationRequest.intent" />
            <short value="Whether the request is a proposal, plan, or an original order." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.category">
            <path value="MedicationRequest.category" />
            <short value="Provides the business context for the relevant dispensing processes." />
            <mustSupport value="true" />
            <binding>
                <strength value="extensible" />
                <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationRequestCategory" />
            </binding>
        </element>
        <element id="MedicationRequest.medication[x]">
            <path value="MedicationRequest.medication[x]" />
            <short value="Identifies the medication being requested." />
            <mustSupport value="true" />
            <binding>
                <strength value="preferred" />
                <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationCode" />
            </binding>
        </element>
        <element id="MedicationRequest.subject">
            <path value="MedicationRequest.subject" />
            <short value="Who the medication request is for." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.authoredOn">
            <path value="MedicationRequest.authoredOn" />
            <short value="The date / time that the medication request was initially authored." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.requester">
            <path value="MedicationRequest.requester" />
            <short value="Who is requesting the medication." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.courseOfTherapyType">
            <path value="MedicationRequest.courseOfTherapyType" />
            <short value="A course of therapy for a medication request" />
            <definition value="The description of the course of therapy for a medication request." />
            <binding>
                <strength value="extensible" />
                <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationRequestCourseOfTherapy" />
            </binding>
        </element>
        <element id="MedicationRequest.dosageInstruction">
            <path value="MedicationRequest.dosageInstruction" />
            <short value="Dosage instructions for the medication." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dosageInstruction.text">
            <path value="MedicationRequest.dosageInstruction.text" />
            <short value="Free text dosage instructions." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dosageInstruction.timing">
            <path value="MedicationRequest.dosageInstruction.timing" />
            <short value="When the medication should be administered." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dosageInstruction.asNeeded[x]">
            <path value="MedicationRequest.dosageInstruction.asNeeded[x]" />
            <binding>
                <strength value="preferred" />
            </binding>
        </element>
        <element id="MedicationRequest.dosageInstruction.site">
            <path value="MedicationRequest.dosageInstruction.site" />
            <binding>
                <strength value="preferred" />
                <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BodySite" />
            </binding>
        </element>
        <element id="MedicationRequest.dosageInstruction.route">
            <path value="MedicationRequest.dosageInstruction.route" />
            <binding>
                <strength value="preferred" />
                <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-SubstanceOrProductAdministrationRoute" />
            </binding>
        </element>
        <element id="MedicationRequest.dosageInstruction.method">
            <path value="MedicationRequest.dosageInstruction.method" />
            <binding>
                <strength value="preferred" />
                <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationDosageMethod" />
            </binding>
        </element>
        <element id="MedicationRequest.dosageInstruction.doseAndRate">
            <path value="MedicationRequest.dosageInstruction.doseAndRate" />
            <short value="Dosage instructions for the requested medication." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dosageInstruction.doseAndRate.dose[x]">
            <path value="MedicationRequest.dosageInstruction.doseAndRate.dose[x]" />
            <short value="Quantity of requested medication to be administered." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dosageInstruction.doseAndRate.rate[x]">
            <path value="MedicationRequest.dosageInstruction.doseAndRate.rate[x]" />
            <short value="Rate at which the requested medication is to be administered." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dispenseRequest">
            <path value="MedicationRequest.dispenseRequest" />
            <short value="Specific dispensing quantity instructions." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.dispenseRequest.quantity">
            <path value="MedicationRequest.dispenseRequest.quantity" />
            <short value="&gt;Amount of medication to supply per dispense." />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.substitution">
            <path value="MedicationRequest.substitution" />
            <short value="Any restrictions on medication substitution." />
            <min value="1" />
            <mustSupport value="true" />
        </element>
        <element id="MedicationRequest.substitution.allowed[x]">
            <path value="MedicationRequest.substitution.allowed[x]" />
            <definition value="The purpose of this element is to allow the prescriber to dispense a different drug from what was prescribed." />
        </element>
    </differential>
</StructureDefinition>

JSON View

{
    "resourceType": "StructureDefinition",
    "id": "UKCore-MedicationRequest",
    "url": "https://fhir.hl7.org.uk/StructureDefinition/UKCore-MedicationRequest",
    "version": "2.5.0",
    "name": "UKCoreMedicationRequest",
    "title": "UK Core Medication Request",
    "status": "active",
    "date": "2024-07-11",
    "publisher": "HL7 UK",
    "contact":  [
        {
            "name": "HL7 UK",
            "telecom":  [
                {
                    "system": "email",
                    "value": "ukcore@hl7.org.uk",
                    "use": "work",
                    "rank": 1
                }
            ]
        }
    ],
    "description": "This profile defines the UK constraints and extensions on the International FHIR resource [MedicationRequest](https://hl7.org/fhir/R4/MedicationRequest.html).",
    "purpose": "An order or request for both supply of the medication and the instructions for administration of the medication to an individual. \n\nThis profile covers inpatient medication orders as well as community orders (whether filled by the prescriber or by a pharmacy). It also includes orders for over-the-counter medications (e.g. Aspirin), total parenteral nutrition and diet/ vitamin supplements, and may be used to support the order of medication-related devices. \n\nIt is not intended for use in prescribing particular diets, or for ordering non-medication-related items (eyeglasses, supplies, etc).",
    "copyright": "Copyright © 2021+ HL7 UK Licensed under the Apache License, Version 2.0 (the \"License\"); you may not use this file except in compliance with the License. You may obtain a copy of the License at  http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. HL7® FHIR® standard Copyright © 2011+ HL7 The HL7® FHIR® standard is used under the FHIR license. You may obtain a copy of the FHIR license at  https://www.hl7.org/fhir/license.html.",
    "fhirVersion": "4.0.1",
    "kind": "resource",
    "abstract": false,
    "type": "MedicationRequest",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/MedicationRequest",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "MedicationRequest.extension:medicationRepeatInformation",
                "path": "MedicationRequest.extension",
                "sliceName": "medicationRepeatInformation",
                "short": "Allows the resource to be referenced within / by other resources.",
                "type":  [
                    {
                        "code": "Extension",
                        "profile":  [
                            "https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-MedicationRepeatInformation"
                        ]
                    }
                ]
            },
            {
                "id": "MedicationRequest.identifier",
                "path": "MedicationRequest.identifier",
                "short": "Allows the resource to be referenced within / by other resources.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.status",
                "path": "MedicationRequest.status",
                "short": "A code specifying the current state of the order.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.intent",
                "path": "MedicationRequest.intent",
                "short": "Whether the request is a proposal, plan, or an original order.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.category",
                "path": "MedicationRequest.category",
                "short": "Provides the business context for the relevant dispensing processes.",
                "mustSupport": true,
                "binding": {
                    "strength": "extensible",
                    "valueSet": "https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationRequestCategory"
                }
            },
            {
                "id": "MedicationRequest.medication[x]",
                "path": "MedicationRequest.medication[x]",
                "short": "Identifies the medication being requested.",
                "mustSupport": true,
                "binding": {
                    "strength": "preferred",
                    "valueSet": "https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationCode"
                }
            },
            {
                "id": "MedicationRequest.subject",
                "path": "MedicationRequest.subject",
                "short": "Who the medication request is for.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.authoredOn",
                "path": "MedicationRequest.authoredOn",
                "short": "The date / time that the medication request was initially authored.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.requester",
                "path": "MedicationRequest.requester",
                "short": "Who is requesting the medication.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.courseOfTherapyType",
                "path": "MedicationRequest.courseOfTherapyType",
                "short": "A course of therapy for a medication request",
                "definition": "The description of the course of therapy for a medication request.",
                "binding": {
                    "strength": "extensible",
                    "valueSet": "https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationRequestCourseOfTherapy"
                }
            },
            {
                "id": "MedicationRequest.dosageInstruction",
                "path": "MedicationRequest.dosageInstruction",
                "short": "Dosage instructions for the medication.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dosageInstruction.text",
                "path": "MedicationRequest.dosageInstruction.text",
                "short": "Free text dosage instructions.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dosageInstruction.timing",
                "path": "MedicationRequest.dosageInstruction.timing",
                "short": "When the medication should be administered.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dosageInstruction.asNeeded[x]",
                "path": "MedicationRequest.dosageInstruction.asNeeded[x]",
                "binding": {
                    "strength": "preferred"
                }
            },
            {
                "id": "MedicationRequest.dosageInstruction.site",
                "path": "MedicationRequest.dosageInstruction.site",
                "binding": {
                    "strength": "preferred",
                    "valueSet": "https://fhir.hl7.org.uk/ValueSet/UKCore-BodySite"
                }
            },
            {
                "id": "MedicationRequest.dosageInstruction.route",
                "path": "MedicationRequest.dosageInstruction.route",
                "binding": {
                    "strength": "preferred",
                    "valueSet": "https://fhir.hl7.org.uk/ValueSet/UKCore-SubstanceOrProductAdministrationRoute"
                }
            },
            {
                "id": "MedicationRequest.dosageInstruction.method",
                "path": "MedicationRequest.dosageInstruction.method",
                "binding": {
                    "strength": "preferred",
                    "valueSet": "https://fhir.hl7.org.uk/ValueSet/UKCore-MedicationDosageMethod"
                }
            },
            {
                "id": "MedicationRequest.dosageInstruction.doseAndRate",
                "path": "MedicationRequest.dosageInstruction.doseAndRate",
                "short": "Dosage instructions for the requested medication.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dosageInstruction.doseAndRate.dose[x]",
                "path": "MedicationRequest.dosageInstruction.doseAndRate.dose[x]",
                "short": "Quantity of requested medication to be administered.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dosageInstruction.doseAndRate.rate[x]",
                "path": "MedicationRequest.dosageInstruction.doseAndRate.rate[x]",
                "short": "Rate at which the requested medication is to be administered.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dispenseRequest",
                "path": "MedicationRequest.dispenseRequest",
                "short": "Specific dispensing quantity instructions.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.dispenseRequest.quantity",
                "path": "MedicationRequest.dispenseRequest.quantity",
                "short": ">Amount of medication to supply per dispense.",
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.substitution",
                "path": "MedicationRequest.substitution",
                "short": "Any restrictions on medication substitution.",
                "min": 1,
                "mustSupport": true
            },
            {
                "id": "MedicationRequest.substitution.allowed[x]",
                "path": "MedicationRequest.substitution.allowed[x]",
                "definition": "The purpose of this element is to allow the prescriber to dispense a different drug from what was prescribed."
            }
        ]
    }
}

Feedback

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Examples

Eye drops - An example to illustrate a request for eye drops.
Example UKCore-MedicationRequest-EyeDrops

Repeat Information - An example to illustrate the RepeatInformation extension.
Example UKCore-Extension-RepeatInformation

Example Usage Scenarios

The following are example usage scenarios for the UK Core MedicationRequest profile:

  • Query for a patient's specific requested medication
  • Record or update a requested medication.

Profile Specific Implementation Guidance:

Mandatory and Must Support Data Elements

The following elements are identified as MustSupport, and it is expected that consumers and suppliers SHALL support these as per the MustSupport Guidance.

ElementReason
MedicationRequest.identifierAllows the resource to be referenced within / by other resources.
MedicationRequest.statusA code specifying the current state of the order.
MedicationRequest.intentWhether the request is a proposal, plan, or an original order.
MedicationRequest.categoryProvides the business context for the relevant dispensing processes.
MedicationRequest.medication[x]Identifies the medication being requested.
MedicationRequest.subjectWho the medication request is for.
MedicationRequest.authoredOnThe date / time that the medication request was initially authored.
MedicationRequest.requesterWho is requesting the medication.
MedicationRequest.dosageInstructionDosage instructions for the medication.
MedicationRequest.dosageInstruction.textFree text dosage instructions.
MedicationRequest.dosageInstruction.timingWhen the medication should be administered.
MedicationRequest.dosageInstruction.doseAndRateDosage instructions for the requested medication.
MedicationRequest.dosageInstruction.doseAndRate.dose[x]Quantity of requested medication to be administered.
MedicationRequest.dosageInstruction.doseAndRate.rate[x]Rate at which the requested medication is to be administered.
MedicationRequest.dispenseRequestSpecific dispensing quantity instructions.
MedicationRequest.dispenseRequest.quantity>Amount of medication to supply per dispense.
MedicationRequest.substitutionAny restrictions on medication substitution.


Extensions

More information about the extensions on the UKCore-MedicationRequest profile can be found using the links below.

ExtensionContextLinkComment
medicationRepeatInformationMedicationRequest.extensionhttps://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-MedicationRepeatInformationAllows the resource to be referenced within / by other resources.


Bindings (differential)

More information about the bindings to UK Core ValueSets can be found below.

ContextStrengthLink
MedicationRequest.categoryextensiblehttps://fhir.hl7.org.uk/ValueSet/UKCore-MedicationRequestCategory
MedicationRequest.medication[x]preferredhttps://fhir.hl7.org.uk/ValueSet/UKCore-MedicationCode
MedicationRequest.courseOfTherapyTypeextensiblehttps://fhir.hl7.org.uk/ValueSet/UKCore-MedicationRequestCourseOfTherapy
MedicationRequest.dosageInstruction.sitepreferredhttps://fhir.hl7.org.uk/ValueSet/UKCore-BodySite
MedicationRequest.dosageInstruction.routepreferredhttps://fhir.hl7.org.uk/ValueSet/UKCore-SubstanceOrProductAdministrationRoute
MedicationRequest.dosageInstruction.methodpreferredhttps://fhir.hl7.org.uk/ValueSet/UKCore-MedicationDosageMethod


status

The scope of MedicationRequest.status MAY vary depending on the nature of the implementation. The FHIR standard defines the MedicationRequest.status of completed as “All actions that are implied by the prescription have occurred”.

This allows for different design decisions for tracking a medication request status.

  • An implementation MAY track the MedicationRequest.status through to the receipt of the medication request at the pharmacy, after which the MedicationRequest.status is completed

  • An implementation MAY track the MedicationRequest.status through to completion of dispensing events, after which the MedicationRequest.status is completed

  • An implementation MAY track the MedicationRequest.status through to completion of administration events for the medication that has been dispensed, after which the MedicationRequest.status is completed.

The following guidance is based on an implementation tracking the status through to completion of dispensing events.

Status FHIR Definition Implementation Guidance
draft The prescription is not yet "actionable", e.g. it is a work in progress, requires sign-off, verification or needs to be run through decision support process. The order is work in progress within the ePMA system and has not yet sent to the pharmacy.
active The prescription is "actionable", but not all actions that are implied by it have occurred yet. The order has been sent and accepted by the pharmacy. Dispensing and administration activities may have been started but are not yet `Complete`.
completed All actions that are implied by the prescription have occurred. Dispensing activities have been completed for the medication defined within the order.
on-hold Actions implied by the prescription are to be temporarily halted but are expected to continue later. May also be called `Suspended`. Will prevent the order being sent to the pharmacy. If already sent, an update needs to be sent to the pharmacy to temporarily halt further dispensing.
cancelled The prescription has been withdrawn before any administrations have occurred. Will prevent the order being sent to the pharmacy. If already sent, an update needs to be sent to the pharmacy so that no further medication is dispensed.
stopped Actions implied by the prescription are to be permanently halted before all of the administrations occurred. This SHOULD NOT be used if the original order was entered in error. The order needs to be stopped on clinical grounds. An update needs to be sent to the pharmacy so that no further medication is dispensed.
entered-in-error Some of the actions that are implied by the medication request may have occurred. For example, the medication may have been dispensed and the patient may have taken some of the medication. Clinical decision support systems SHOULD take this status into account. The order needs to be stopped due to human data entry error. An update needs to be sent to the pharmacy so that no further medication is dispensed.
unknown The authoring/source system does not know which of the status values currently applies for this observation. Note: This concept is not to be used for ‘other’ - one of the listed statuses is presumed to apply, but the authoring/source system does not know which. Recommended not to be supported as the use case for this status value is unclear.

Logical MedicationRequest status transitions

This state transition diagram is an enhancement over the generic State Machine defined within the FHIR specification. It includes the MedicationRequest.status values associated with a medication request with transitions applicable to a UK implementation.


medication-request-status-flow

Status transitions explained

Previous Future Interoperability Recommendation
draft active This transition will trigger the sending / sharing of the MedicationRequest from the prescribing system to the pharmacy system to start dispensing activities.
draft cancelled Contained within the prescribing system.
draft on-hold Contained within the prescribing system.
draft entered-in-error Contained within the prescribing system.
on-hold draft Contained within the prescribing system.
on-hold active This transition will trigger an update to the MedicationRequest from the prescribing system to the pharmacy system to restart dispensing activities.
on-hold cancelled Contained within the prescribing system.
on-hold stopped Contained within the prescribing system.
on-hold entered-in-error Contained within the prescribing system.
active active Not a MedicationRequest status transition but the pharmacy system could send / share dispensing activities with the prescribing system, typically using a FHIR profile based on MedicationDispense.
active on-hold This transition will trigger an update to the MedicationRequest from the prescribing system to the pharmacy system to suspend dispensing activities.

If dispensing has already occurred but meds have not been delivered to the ward then they can stay within the pharmacy until the request is re-activated. If meds have been delivered to the ward then there is no action required by the pharmacy system.
active entered-in-error This transition will trigger an update to the MedicationRequest from the prescribing system to the pharmacy system to stop dispensing activities.
active stopped This transition will trigger an update to the MedicationRequest from the prescribing system to the pharmacy system to stop dispensing activities.
active completed Contained within the prescribing system. All requested medication has been received from pharmacy and has been recorded / confirmed within the ePMA system.

statusReason

A coded reason for the current state of the medication request.

SHOULD only be populated when the MedicationRequest.status is on-hold, cancelled or stopped.


intent

The value order SHOULD be used to denote this is a medication request order.


category

It is expected that any implementation will need to distinguish between medication orders for processes for dispensing and / or administration so this element is business required.

Category values mapped to target use-cases

Example use cases for each category:

Category Use-case Scenario
inpatient Inpatient medication requests, for a named patient, to be dispensed by the hospital pharmacy and intended for administration on a hospital ward. Patient Anne Teak is admitted as an inpatient is prescribed Amoxicillin 500mg orally three times daily for a suspected chest infection.
leave Medication requests, for a named patient who is on short-term leave from an inpatient stay (but is not discharged), to be dispensed by the hospital pharmacy and intended for administration at home. Current inpatient Jackie Taitor is going home for weekend leave and is prescribed 3 days supply of Citalopram 20mg tablets one to be taken in the morning.
discharge Discharge medications requests, for a named patient, to be dispensed by the hospital pharmacy and issued on discharge for administration at home. Patient Bill Ding is discharged from hospital following an admission where they were diagnosed as being diabetic. They were prescribed 4 weeks quantity of Metformin 500mg tablets to take twice daily on an on-going basis. Their GP will be instructed to continue this course of medication within a discharge note.
outpatient Outpatient medication requests, for a named patient, to be dispensed by the hospital pharmacy and intended for administration in the Outpatients department, Accident and Emergency department, or Day unit. Patient Moe DeGrasse is prescribed a Goserelin 3.6mg implant to be administered by IM injection in the Outpatients department on 1st May 2020.
community Outpatient medication requests, for a named patient, to be dispensed by the hospital pharmacy for administration at home. Patient Lorna Mower has attended the dermatology outpatients clinic and is prescribed Betamethasone 0.1% cream to be applied sparingly twice daily for 2 weeks.

Note: A community medication request would trigger the printing and signing of a paper FP10HNC prescription, or (when implemented by the Trust) an electronic prescription sent to the NHS Electronic Prescription Service.


priority

Recommendation: not to be used within an implementation - or used with caution.

The stating of a priority, in any business context including healthcare, is often de-valued as given the choice, every clinician wants medication urgently for their patients.

If MedicationRequest.priority is used, consider only initially supporting the routine and urgent request priorities, and set clear criteria for when a MedicationRequest should be marked and handled as urgent.

Usage of the value "stat"

The stat request priority is potentially confusing as it has two meanings:

  1. to indicate a "here and now" order going to pharmacy
  2. used within a MedicationRequest.dosageInstruction can also mean "give once immediately".

Avoid using stat and asap where possible.


doNotPerform

At this time it is advised that providers to not support this element within an implementation.

Consumers SHALL check the value of this element prior to processing and, if MedicationRequest.doNotPerform is true, either appropriately process doNotPerform MedicationRequests (e.g. notify the user) or reject the resource.


medication[x]

Medication WITH dm+d code

Where a dm+d code exists it SHALL be used either as MedicationRequest.medicationCodeableConcept.coding or as MedicationRequest.medicationReference.Medication.code

Where CodeableConcept is used, MedicationRequest.medicationCodeableConcept.coding is the dm+d code and MedicationRequest.medicationCodeableConcept.text is dm+d concept name/description.

Can be either a dm+d code as a CodeableConcept or reference to UK Core Profile UKCore-Medication resource. Using a CodeableConcept is preferred unless additional data if required that would be contained within a UK Core Profile UKCore-Medication resource.

The elements MedicationRequest.medicationCodeableConcept.coding and MedicationRequest.medicationReference.Medication.code are both bound to ValueSet UKCore-MedicationCode

Examples where a reference to a UK Core Profile UKCore-Medication would be applicable include:

  • Record a VTM with a specific form
  • Record manufacturer with a concept as described in ValueSet UKCore-MedicationCode
  • Record batch number
  • Record ingredients (for example with a magisterial prescription or an excipient).

Medication WITHOUT dm+d code

Medication not published within the dm+d may be requested in the Acute care setting.

In this scenario it is recommended to use the MedicationRequest.medicationCodeableConcept variant for this element.

If the prescribing system has both a locally assigned code and description for the medication then;

  • The MedicationRequest.medicationCodeableConcept.text SHOULD be the description for the medication.
  • The MedicationRequest.medicationCodeableConcept.coding.code SHOULD be the code for the medication.
  • The MedicationRequest.medicationCodeableConcept.coding.display SHOULD be the description for the medication, i.e. the same value as MedicationRequest.medicationCodeableConcept.text.

If the prescribing system only has a description for the medication then;

  • The MedicationRequest.medicationCodeableConcept.text SHOULD be the locally assigned description for the medication.

subject

Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles:


encounter

Encounter created as part of encounter/admission/stay by reference to the encounter. Where possible, it is expected that the resource being referenced SHOULD conform to Profile UKCore-Encounter


supportingInformation

Where a UK Core profile exists, the resource being referenced SHOULD conform to the profile.

Some examples of use include:

  • Reference an Observation resource to share data like the patient’s height and weight.
  • Reference a Condition resource to share a patient’s condition if this influences the pharmacy dispensing process. For example; 105502003 Dependence on renal dialysis (finding) or 46177005 End stage renal disease (disorder) would justify an unusual dosage on a prescription.
  • Reference an AllergyIntolerance resource to share a patient’s allergy to make it clear why certain medication is being requested. For example, a Penicillin allergy.
  • Reference a CarePlan resource where medication dispensing is considered as part of a specific treatment regimen. For example, care plans for stroke patients.

authoredOn

SHOULD be populated with the date and time that the medication request was authored.


requester

A business required element identifying the clinically qualified human prescriber referenced by a Practitioner or PractitionerRole resource. They may be other possible references depending on the use case the full list is below.

Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles:


performer

Intended performer of administration by reference.

Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles:


recorder

The identification of the MedicationRequest.recorder where this is a different person to the MedicationRequest.requester provides an additional point of contact for any queries related to the medication request and is done by a reference.

Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles:


reasonCode

Useful to the wider clinical team as an additional safety check, especially if the requested medication is normally prescribed for different reasons, to avoid confusion between clinical teams. Recording an indication against a medication request also gives valuable insight when data is collated for secondary uses, especially if linked with outcome data.

Where possible this SHOULD be a coded term from the SNOMED CT hierarchy as a descendant of the concept 404684003 (Clinical finding); however, free-text reasons are also acceptable.


reasonReference

Reference to Condition or Observation that supports why the prescription is being written by reference.

Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles:

If the clinical system has recorded the reason for medication (often known as the indication) as either a Condition or Observation resource then a logical link to that resource has business benefit.


basedOn

Where possible, it is expected that the resource being referenced SHOULD conform to one of the following UK Core profiles:

Recommendation: To reference a previous medication request use MedicationRequest.priorPrescription instead of this element.

If the clinical system has implemented the CarePlan resource, a logical link to the care plan for which the medication request is based has business benefit.


groupIdentifier

Gives the ability to logically link/group medication requests.

For example, the FHIR interface for the NHS England Electronic Prescription Service uses the MedicationRequest.groupIdentifier to group medication requests for the same patient and prescribed at the same time.


courseOfTherapyType

An element defining the course of therapy, such as 'continuous' or 'acute'.


note

Use when the prescriber wishes to provide supporting textual information to the dispenser.


dosageInstruction

Consider aligning to the Implementation Guide for Digital Medicines, but as a minimum, MedicationRequest.dosageInstruction.text.

Where a structured dosage is provided, populate MedicationRequest.dosageInstruction.text with a human readable dosage string that is clinically equivalent to the coded dosage instruction. This is for interoperability with consuming systems that do not yet support fully structured dosing instructions.


dispenseRequest

Used to convey specific dispensing requests to the pharmacy that are not otherwise detailed within the MedicationRequest.dosageInstruction.

For most medication requests the hospital pharmacy will typically dispense a quantity of medication appropriate for the medication and dosage, as per their local agreed best practice, to balance the quantity of medication held in pharmacy to that held on the ward.

The inclusion of a MedicationRequest.dispenseRequest MAY be useful when requesting discharge medication requests.

Use Case Original Medication Discharge Medication dispense Request
Instruction to the pharmacy to dispense a specific quantity of medication, either expressed as a number of days or as a dose form quantity. Paracetamol - 1g - four times a day Paracetamol - 1g - four times a day

One week supplied on discharge.
7 days or 28 tablets
Any inpatient scenario where the pharmacy is instructed to dispense a specific quantity of medication. For example, if the patient is known to be discharged soon. Atenolol - 50mg - daily Atenolol - 50mg - daily

Two weeks supplied on discharge, GP to continue.
14 days or 14 tablets

dispenseRequest.validityPeriod

In electronic repeat dispensing, the MedicationRequest.dispenseRequest.validityPeriod.end is used to record when an eRD prescription cycle ends. This is different to the extension medicationRepeatInformation.authorisationExpiryDate which is the date the prescriber must review the prescription with the patient.


substitution

Allowing substitution

Where substitution to be be allowed, set to true. The inclusion of the coded reason is optional as the ValueSet defined in FHIR is of limited benefit to UK healthcare.


priorPrescription

A reference to previous request.

Where possible, it is expected that the resource being referenced SHOULD conform to Profile UKCore-MedicationRequest.

Useful when the clinical system would benefit from being able to link re-supply requests with a previous request.


eventHistory

A list of events of interest in the lifecycle and SHOULD conform to UKCore-Provenance (draft).