This page is part of the FHIR Specification (v5.0.0-draft-final: Final QA Preview for R5 - see ballot notes). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4

12.18 Resource ServiceRequest - Content

Orders and Observations icon

Work Group

Maturity Level: 2

Trial Use

Security Category: Patient

Compartments: Device, Encounter, Patient, Practitioner, RelatedPerson

A record of a request for service such as diagnostic investigations, treatments, or operations to be performed.

12.18.1 Scope and Usage

This resource is a request resource from a FHIR workflow perspective - see Workflow.

ServiceRequest represents an order or proposal or plan, as distinguished by ServiceRequest.intent to perform a diagnostic or other service on or for a patient. ServiceRequest represents a proposal or plan or order for a service to be performed that would result in a Procedure or DiagnosticReport, which in turn may reference one or more Observations, which summarize the performance of the procedures and associated documentation such as observations, images, findings that are relevant to the treatment/management of the subject. This resource may be used to share relevant information required to support a referral or a transfer of care request from one practitioner or organization to another when a patient is required to be referred to another provider for a consultation /second opinion and/or for short term or longer term management of one or more health issues or problems.

Examples include:

diagnostic tests/studies
endoscopic procedures
counseling
biopsies
therapies (e.g., physio-, social-, psychological-)
(exploratory) surgeries or procedures
exercises
specialist consultation and assessments
community services
nursing services
pharmacist medication review, and
other clinical interventions.

Procedures may be performed by a healthcare professional, a friend or relative or in some cases by the patient themselves.

The principal intention of ServiceRequest is to support ordering procedures for one patient (which includes non-human patients in veterinary medicine). However, in many contexts, healthcare related processes include performing diagnostic investigations on groups of subjects, devices involved in the provision of healthcare, and even environmental locations such as ducts, bodies of water, etc. ServiceRequest supports all these usages. The service request may represent an order that is entered by a practitioner in a CPOE system as well as a proposal made by a clinical decision support (CDS) system based on a patient's clinical record and context of care. Planned procedures referenced by a CarePlan may also be represented by this resource.

The general work flow that this resource facilitates is that a clinical system creates a service request. The service request is then accessed by or exchanged with a system, perhaps via intermediaries, that represents an organization (e.g., diagnostic or imaging service, surgical team, physical therapy department) that can perform the procedure. The organization receiving the service request will, after it accepts the request, update the request as the work is performed, and then finally issue a report that references the requests that it fulfilled.

The ServiceRequest resource allows requesting only a single procedure. If a workflow requires requesting multiple procedures simultaneously, this is done using multiple instances of this resource. These instances can be linked in different ways, depending on the needs of the workflow. For guidance, refer to the Request pattern

12.18.2 Boundaries and Relationships

ServiceRequest is a record of a proposal/plan or order for a service to be performed that would result in a Procedure, Observation, DiagnosticReport, ImagingStudy or similar resource. In contrast to ServiceRequest, Task which spans both intent and event and tracks the execution through to completion and is intended for "administrative" actions like requesting and tracking things to be done to a record, or keeping track of a checklist of steps such to be performed as part of a fulfilment process. A ServiceRequest can be higher-level authorization that triggered the creation of Task, or it can be the "request" resource Task is seeking to fulfill.

ServiceRequest and CommunicationRequest are related. A CommunicationRequest is a request to merely disclose information. Whereas a ServiceRequest would be used to request information as part of training or counseling - i.e. when the process will involve verification of the patient's comprehension or an attempt to change the patient's mental state. In some workflows both may exist. For example, upon receiving a CommunicationRequest a practitioner might initiate a ServiceRequest.

12.18.3 References to this Resource

Structure

Name	Flags	Card.	Type	Description & Constraints
ServiceRequest	TU		DomainResource	A request for a service to be performed + Rule: bodyStructure SHALL only be present if bodySite is not present + Rule: orderDetail SHALL only be present if code is present Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
identifier	Σ	0..*	Identifier	Identifiers assigned to this order
instantiatesCanonical	Σ	0..*	canonical(ActivityDefinition \| PlanDefinition)	Instantiates FHIR protocol or definition
instantiatesUri	Σ	0..*	uri	Instantiates external protocol or definition
basedOn	Σ	0..*	Reference(CarePlan \| ServiceRequest \| MedicationRequest)	What request fulfills
replaces	Σ	0..*	Reference(ServiceRequest)	What request replaces
requisition	Σ	0..1	Identifier	Composite Request ID
status	?!Σ	1..1	code	draft \| active \| on-hold \| revoked \| completed \| entered-in-error \| unknown Binding: RequestStatus (Required)
intent	?!Σ	1..1	code	proposal \| plan \| directive \| order + Binding: RequestIntent (Required)
category	Σ	0..*	CodeableConcept	Classification of service Binding: Service Request Category Codes (Example)
priority	Σ	0..1	code	routine \| urgent \| asap \| stat Binding: RequestPriority (Required)
doNotPerform	?!Σ	0..1	boolean	True if service/procedure should not be performed
code	Σ C	0..1	CodeableReference(ActivityDefinition \| PlanDefinition)	What is being requested/ordered Binding: Procedure Codes (SNOMED CT) (Example)
orderDetail	Σ C	0..*	BackboneElement	Additional order information
parameterFocus		0..1	CodeableReference(Device \| DeviceDefinition \| DeviceRequest \| SupplyRequest \| Medication \| MedicationRequest \| BiologicallyDerivedProduct \| Substance)	The context of the order details by reference
parameter		0..1	BackboneElement	The parameter details for the service being requested
code		1..1	CodeableConcept	The detail of the order being requested
value[x]		0..1		The value for the order detail
valueQuantity			Quantity
valueRatio			Ratio
valueRange			Range
valueBoolean			boolean
valueCodeableConcept			CodeableConcept
valueString			string
valuePeriod			Period
quantity[x]	Σ	0..1		Service amount
quantityQuantity			Quantity
quantityRatio			Ratio
quantityRange			Range
subject	Σ	1..1	Reference(Patient \| Group \| Location \| Device)	Individual or Entity the service is ordered for
focus	Σ	0..*	Reference(Any)	What the service request is about, when it is not about the subject of record
encounter	Σ	0..1	Reference(Encounter)	Encounter in which the request was created
occurrence[x]	Σ	0..1		When service should occur
occurrenceDateTime			dateTime
occurrencePeriod			Period
occurrenceTiming			Timing
asNeeded[x]	Σ	0..1		Preconditions for service Binding: SNOMED CT Medication As Needed Reason Codes (Example)
asNeededBoolean			boolean
asNeededCodeableConcept			CodeableConcept
authoredOn	Σ	0..1	dateTime	Date request signed
requester	Σ	0..1	Reference(Practitioner \| PractitionerRole \| Organization \| Patient \| RelatedPerson \| Device)	Who/what is requesting service
performerType	Σ	0..1	CodeableConcept	Performer role Binding: Participant Roles (Example)
performer	Σ	0..*	Reference(Practitioner \| PractitionerRole \| Organization \| CareTeam \| HealthcareService \| Patient \| Device \| RelatedPerson)	Requested performer
location	Σ	0..*	CodeableReference(Location)	Requested location Binding: ServiceDeliveryLocationRoleType (Example)
reason	Σ	0..*	CodeableReference(Condition \| Observation \| DiagnosticReport \| DocumentReference \| DetectedIssue)	Explanation/Justification for procedure or service Binding: Procedure Reason Codes (Example)
insurance		0..*	Reference(Coverage \| ClaimResponse)	Associated insurance coverage
supportingInfo		0..*	CodeableReference(Any)	Additional clinical information
specimen	Σ	0..*	Reference(Specimen)	Procedure Samples
bodySite	Σ C	0..*	CodeableConcept	Coded location on Body Binding: SNOMED CT Body Structures (Example)
bodyStructure	Σ C	0..1	Reference(BodyStructure)	BodyStructure-based location on the body
note		0..*	Annotation	Comments
patientInstruction		0..*	BackboneElement	Patient or consumer-oriented instructions
instruction[x]	Σ	0..1		Patient or consumer-oriented instructions
instructionMarkdown			markdown
instructionReference			Reference(DocumentReference)
relevantHistory		0..*	Reference(Provenance)	Request provenance
Documentation for this format

See the Extensions for this resource

UML Diagram (Legend)

XML Template

<ServiceRequest xmlns="http://hl7.org/fhir"> 
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <identifier><!-- 0..* Identifier Identifiers assigned to this order --></identifier>
 <instantiatesCanonical><!-- 0..* canonical(ActivityDefinition|PlanDefinition) Instantiates FHIR protocol or definition --></instantiatesCanonical>
 <instantiatesUri value="[uri]"/><!-- 0..* Instantiates external protocol or definition -->
 <basedOn><!-- 0..* Reference(CarePlan|MedicationRequest|ServiceRequest) What request fulfills --></basedOn>
 <replaces><!-- 0..* Reference(ServiceRequest) What request replaces --></replaces>
 <requisition><!-- 0..1 Identifier Composite Request ID --></requisition>
 <status value="[code]"/><!-- 1..1 draft | active | on-hold | revoked | completed | entered-in-error | unknown -->
 <intent value="[code]"/><!-- 1..1 proposal | plan | directive | order + -->
 <category><!-- 0..* CodeableConcept Classification of service --></category>
 <priority value="[code]"/><!-- 0..1 routine | urgent | asap | stat -->
 <doNotPerform value="[boolean]"/><!-- 0..1 True if service/procedure should not be performed -->
 <code><!-- I 0..1 CodeableReference(ActivityDefinition|PlanDefinition) What is being requested/ordered --></code>
 <orderDetail>  <!-- I 0..* Additional order information -->
  <parameterFocus><!-- 0..1 CodeableReference(BiologicallyDerivedProduct|Device|
    DeviceDefinition|DeviceRequest|Medication|MedicationRequest|Substance|
    SupplyRequest) The context of the order details by reference --></parameterFocus>
  <parameter>  <!-- 0..1 The parameter details for the service being requested -->
   <code><!-- 1..1 CodeableConcept The detail of the order being requested --></code>
   <value[x]><!-- 0..1 Quantity|Ratio|Range|boolean|CodeableConcept|string|
     Period The value for the order detail --></value[x]>
  </parameter>
 </orderDetail>
 <quantity[x]><!-- 0..1 Quantity|Ratio|Range Service amount --></quantity[x]>
 <subject><!-- 1..1 Reference(Device|Group|Location|Patient) Individual or Entity the service is ordered for --></subject>
 <focus><!-- 0..* Reference(Any) What the service request is about, when it is not about the subject of record --></focus>
 <encounter><!-- 0..1 Reference(Encounter) Encounter in which the request was created --></encounter>
 <occurrence[x]><!-- 0..1 dateTime|Period|Timing When service should occur --></occurrence[x]>
 <asNeeded[x]><!-- 0..1 boolean|CodeableConcept Preconditions for service --></asNeeded[x]>
 <authoredOn value="[dateTime]"/><!-- 0..1 Date request signed -->
 <requester><!-- 0..1 Reference(Device|Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) Who/what is requesting service --></requester>
 <performerType><!-- 0..1 CodeableConcept Performer role --></performerType>
 <performer><!-- 0..* Reference(CareTeam|Device|HealthcareService|Organization|
   Patient|Practitioner|PractitionerRole|RelatedPerson) Requested performer --></performer>
 <location><!-- 0..* CodeableReference(Location) Requested location  --></location>
 <reason><!-- 0..* CodeableReference(Condition|DetectedIssue|DiagnosticReport|
   DocumentReference|Observation) Explanation/Justification for procedure or service --></reason>
 <insurance><!-- 0..* Reference(ClaimResponse|Coverage) Associated insurance coverage --></insurance>
 <supportingInfo><!-- 0..* CodeableReference(Any) Additional clinical information --></supportingInfo>
 <specimen><!-- 0..* Reference(Specimen) Procedure Samples --></specimen>
 <bodySite><!-- I 0..* CodeableConcept Coded location on Body --></bodySite>
 <bodyStructure><!-- I 0..1 Reference(BodyStructure) BodyStructure-based location on the body --></bodyStructure>
 <note><!-- 0..* Annotation Comments --></note>
 <patientInstruction>  <!-- 0..* Patient or consumer-oriented instructions -->
  <instruction[x]><!-- 0..1 markdown|Reference(DocumentReference) Patient or consumer-oriented instructions --></instruction[x]>
 </patientInstruction>
 <relevantHistory><!-- 0..* Reference(Provenance) Request provenance --></relevantHistory>
</ServiceRequest>

JSON Template

{
  "resourceType" : "ServiceRequest",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "identifier" : [{ Identifier }], // Identifiers assigned to this order
  "instantiatesCanonical" : ["<canonical(ActivityDefinition|PlanDefinition)>"], // Instantiates FHIR protocol or definition
  "instantiatesUri" : ["<uri>"], // Instantiates external protocol or definition
  "basedOn" : [{ Reference(CarePlan|MedicationRequest|ServiceRequest) }], // What request fulfills
  "replaces" : [{ Reference(ServiceRequest) }], // What request replaces
  "requisition" : { Identifier }, // Composite Request ID
  "status" : "<code>", // R!  draft | active | on-hold | revoked | completed | entered-in-error | unknown
  "intent" : "<code>", // R!  proposal | plan | directive | order +
  "category" : [{ CodeableConcept }], // Classification of service
  "priority" : "<code>", // routine | urgent | asap | stat
  "doNotPerform" : <boolean>, // True if service/procedure should not be performed
  "code" : { CodeableReference(ActivityDefinition|PlanDefinition) }, // I What is being requested/ordered
  "orderDetail" : [{ // I Additional order information
    "parameterFocus" : { CodeableReference(BiologicallyDerivedProduct|Device|
    DeviceDefinition|DeviceRequest|Medication|MedicationRequest|Substance|
    SupplyRequest) }, // The context of the order details by reference
    "parameter" : { // The parameter details for the service being requested
      "code" : { CodeableConcept }, // R!  The detail of the order being requested
      // value[x]: The value for the order detail. One of these 7:
      "valueQuantity" : { Quantity },
      "valueRatio" : { Ratio },
      "valueRange" : { Range },
      "valueBoolean" : <boolean>,
      "valueCodeableConcept" : { CodeableConcept },
      "valueString" : "<string>",
      "valuePeriod" : { Period }
    }
  }],
  // quantity[x]: Service amount. One of these 3:
  "quantityQuantity" : { Quantity },
  "quantityRatio" : { Ratio },
  "quantityRange" : { Range },
  "subject" : { Reference(Device|Group|Location|Patient) }, // R!  Individual or Entity the service is ordered for
  "focus" : [{ Reference(Any) }], // What the service request is about, when it is not about the subject of record
  "encounter" : { Reference(Encounter) }, // Encounter in which the request was created
  // occurrence[x]: When service should occur. One of these 3:
  "occurrenceDateTime" : "<dateTime>",
  "occurrencePeriod" : { Period },
  "occurrenceTiming" : { Timing },
  // asNeeded[x]: Preconditions for service. One of these 2:
  "asNeededBoolean" : <boolean>,
  "asNeededCodeableConcept" : { CodeableConcept },
  "authoredOn" : "<dateTime>", // Date request signed
  "requester" : { Reference(Device|Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) }, // Who/what is requesting service
  "performerType" : { CodeableConcept }, // Performer role
  "performer" : [{ Reference(CareTeam|Device|HealthcareService|Organization|
   Patient|Practitioner|PractitionerRole|RelatedPerson) }], // Requested performer
  "location" : [{ CodeableReference(Location) }], // Requested location 
  "reason" : [{ CodeableReference(Condition|DetectedIssue|DiagnosticReport|
   DocumentReference|Observation) }], // Explanation/Justification for procedure or service
  "insurance" : [{ Reference(ClaimResponse|Coverage) }], // Associated insurance coverage
  "supportingInfo" : [{ CodeableReference(Any) }], // Additional clinical information
  "specimen" : [{ Reference(Specimen) }], // Procedure Samples
  "bodySite" : [{ CodeableConcept }], // I Coded location on Body
  "bodyStructure" : { Reference(BodyStructure) }, // I BodyStructure-based location on the body
  "note" : [{ Annotation }], // Comments
  "patientInstruction" : [{ // Patient or consumer-oriented instructions
    // instruction[x]: Patient or consumer-oriented instructions. One of these 2:
    "instructionMarkdown" : "<markdown>",
    "instructionReference" : { Reference(DocumentReference) }
  }],
  "relevantHistory" : [{ Reference(Provenance) }] // Request provenance
}

Turtle Template

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


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

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:identifier  ( [ Identifier ] ... ) ; # 0..* Identifiers assigned to this order
  fhir:instantiatesCanonical  ( [ canonical(ActivityDefinition|PlanDefinition) ] ... ) ; # 0..* Instantiates FHIR protocol or definition
  fhir:instantiatesUri  ( [ uri ] ... ) ; # 0..* Instantiates external protocol or definition
  fhir:basedOn  ( [ Reference(CarePlan|MedicationRequest|ServiceRequest) ] ... ) ; # 0..* What request fulfills
  fhir:replaces  ( [ Reference(ServiceRequest) ] ... ) ; # 0..* What request replaces
  fhir:requisition [ Identifier ] ; # 0..1 Composite Request ID
  fhir:status [ code ] ; # 1..1 draft | active | on-hold | revoked | completed | entered-in-error | unknown
  fhir:intent [ code ] ; # 1..1 proposal | plan | directive | order +
  fhir:category  ( [ CodeableConcept ] ... ) ; # 0..* Classification of service
  fhir:priority [ code ] ; # 0..1 routine | urgent | asap | stat
  fhir:doNotPerform [ boolean ] ; # 0..1 True if service/procedure should not be performed
  fhir:code [ CodeableReference(ActivityDefinition|PlanDefinition) ] ; # 0..1 I What is being requested/ordered
  fhir:orderDetail ( [ # 0..* I Additional order information
    fhir:parameterFocus [ CodeableReference(BiologicallyDerivedProduct|Device|DeviceDefinition|DeviceRequest|Medication|
  MedicationRequest|Substance|SupplyRequest) ] ; # 0..1 The context of the order details by reference
    fhir:parameter [ # 0..1 The parameter details for the service being requested
      fhir:code [ CodeableConcept ] ; # 1..1 The detail of the order being requested
      # value[x] : 0..1 The value for the order detail. One of these 7
        fhir:value [  a fhir:Quantity ; Quantity ]
        fhir:value [  a fhir:Ratio ; Ratio ]
        fhir:value [  a fhir:Range ; Range ]
        fhir:value [  a fhir:boolean ; boolean ]
        fhir:value [  a fhir:CodeableConcept ; CodeableConcept ]
        fhir:value [  a fhir:string ; string ]
        fhir:value [  a fhir:Period ; Period ]
    ] ;
  ] ... ) ;
  # quantity[x] : 0..1 Service amount. One of these 3
    fhir:quantity [  a fhir:Quantity ; Quantity ]
    fhir:quantity [  a fhir:Ratio ; Ratio ]
    fhir:quantity [  a fhir:Range ; Range ]
  fhir:subject [ Reference(Device|Group|Location|Patient) ] ; # 1..1 Individual or Entity the service is ordered for
  fhir:focus  ( [ Reference(Any) ] ... ) ; # 0..* What the service request is about, when it is not about the subject of record
  fhir:encounter [ Reference(Encounter) ] ; # 0..1 Encounter in which the request was created
  # occurrence[x] : 0..1 When service should occur. One of these 3
    fhir:occurrence [  a fhir:dateTime ; dateTime ]
    fhir:occurrence [  a fhir:Period ; Period ]
    fhir:occurrence [  a fhir:Timing ; Timing ]
  # asNeeded[x] : 0..1 Preconditions for service. One of these 2
    fhir:asNeeded [  a fhir:boolean ; boolean ]
    fhir:asNeeded [  a fhir:CodeableConcept ; CodeableConcept ]
  fhir:authoredOn [ dateTime ] ; # 0..1 Date request signed
  fhir:requester [ Reference(Device|Organization|Patient|Practitioner|PractitionerRole|RelatedPerson) ] ; # 0..1 Who/what is requesting service
  fhir:performerType [ CodeableConcept ] ; # 0..1 Performer role
  fhir:performer  ( [ Reference(CareTeam|Device|HealthcareService|Organization|Patient|Practitioner|
  PractitionerRole|RelatedPerson) ] ... ) ; # 0..* Requested performer
  fhir:location  ( [ CodeableReference(Location) ] ... ) ; # 0..* Requested location
  fhir:reason  ( [ CodeableReference(Condition|DetectedIssue|DiagnosticReport|DocumentReference|Observation) ] ... ) ; # 0..* Explanation/Justification for procedure or service
  fhir:insurance  ( [ Reference(ClaimResponse|Coverage) ] ... ) ; # 0..* Associated insurance coverage
  fhir:supportingInfo  ( [ CodeableReference(Any) ] ... ) ; # 0..* Additional clinical information
  fhir:specimen  ( [ Reference(Specimen) ] ... ) ; # 0..* Procedure Samples
  fhir:bodySite  ( [ CodeableConcept ] ... ) ; # 0..* I Coded location on Body
  fhir:bodyStructure [ Reference(BodyStructure) ] ; # 0..1 I BodyStructure-based location on the body
  fhir:note  ( [ Annotation ] ... ) ; # 0..* Comments
  fhir:patientInstruction ( [ # 0..* Patient or consumer-oriented instructions
    # instruction[x] : 0..1 Patient or consumer-oriented instructions. One of these 2
      fhir:instruction [  a fhir:markdown ; markdown ]
      fhir:instruction [  a fhir:Reference ; Reference(DocumentReference) ]
  ] ... ) ;
  fhir:relevantHistory  ( [ Reference(Provenance) ] ... ) ; # 0..* Request provenance
]

Changes since R4

ServiceRequest

ServiceRequest.code

Type changed from CodeableConcept to CodeableReference

ServiceRequest.orderDetail

Type changed from CodeableConcept to BackboneElement

ServiceRequest.orderDetail.parameterFocus

Added Element

ServiceRequest.orderDetail.parameter

Added Element

ServiceRequest.orderDetail.parameter.code

Added Mandatory Element

ServiceRequest.orderDetail.parameter.value[x]

Added Element

ServiceRequest.focus

Added Element

ServiceRequest.location

Added Element

ServiceRequest.reason

Added Element

ServiceRequest.supportingInfo

Type changed from Reference(Resource) to CodeableReference

ServiceRequest.bodyStructure

Added Element

ServiceRequest.patientInstruction

Max Cardinality changed from 1 to *
Type changed from string to BackboneElement

ServiceRequest.patientInstruction.instruction[x]

Added Element

ServiceRequest.locationCode

deleted

ServiceRequest.locationReference

deleted

ServiceRequest.reasonCode

deleted

ServiceRequest.reasonReference

deleted

See the Full Difference for further information

This analysis is available as XML or JSON.

Structure

Name	Flags	Card.	Type	Description & Constraints
ServiceRequest	TU		DomainResource	A request for a service to be performed + Rule: bodyStructure SHALL only be present if bodySite is not present + Rule: orderDetail SHALL only be present if code is present Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
identifier	Σ	0..*	Identifier	Identifiers assigned to this order
instantiatesCanonical	Σ	0..*	canonical(ActivityDefinition \| PlanDefinition)	Instantiates FHIR protocol or definition
instantiatesUri	Σ	0..*	uri	Instantiates external protocol or definition
basedOn	Σ	0..*	Reference(CarePlan \| ServiceRequest \| MedicationRequest)	What request fulfills
replaces	Σ	0..*	Reference(ServiceRequest)	What request replaces
requisition	Σ	0..1	Identifier	Composite Request ID
status	?!Σ	1..1	code	draft \| active \| on-hold \| revoked \| completed \| entered-in-error \| unknown Binding: RequestStatus (Required)
intent	?!Σ	1..1	code	proposal \| plan \| directive \| order + Binding: RequestIntent (Required)
category	Σ	0..*	CodeableConcept	Classification of service Binding: Service Request Category Codes (Example)
priority	Σ	0..1	code	routine \| urgent \| asap \| stat Binding: RequestPriority (Required)
doNotPerform	?!Σ	0..1	boolean	True if service/procedure should not be performed
code	Σ C	0..1	CodeableReference(ActivityDefinition \| PlanDefinition)	What is being requested/ordered Binding: Procedure Codes (SNOMED CT) (Example)
orderDetail	Σ C	0..*	BackboneElement	Additional order information
parameterFocus		0..1	CodeableReference(Device \| DeviceDefinition \| DeviceRequest \| SupplyRequest \| Medication \| MedicationRequest \| BiologicallyDerivedProduct \| Substance)	The context of the order details by reference
parameter		0..1	BackboneElement	The parameter details for the service being requested
code		1..1	CodeableConcept	The detail of the order being requested
value[x]		0..1		The value for the order detail
valueQuantity			Quantity
valueRatio			Ratio
valueRange			Range
valueBoolean			boolean
valueCodeableConcept			CodeableConcept
valueString			string
valuePeriod			Period
quantity[x]	Σ	0..1		Service amount
quantityQuantity			Quantity
quantityRatio			Ratio
quantityRange			Range
subject	Σ	1..1	Reference(Patient \| Group \| Location \| Device)	Individual or Entity the service is ordered for
focus	Σ	0..*	Reference(Any)	What the service request is about, when it is not about the subject of record
encounter	Σ	0..1	Reference(Encounter)	Encounter in which the request was created
occurrence[x]	Σ	0..1		When service should occur
occurrenceDateTime			dateTime
occurrencePeriod			Period
occurrenceTiming			Timing
asNeeded[x]	Σ	0..1		Preconditions for service Binding: SNOMED CT Medication As Needed Reason Codes (Example)
asNeededBoolean			boolean
asNeededCodeableConcept			CodeableConcept
authoredOn	Σ	0..1	dateTime	Date request signed
requester	Σ	0..1	Reference(Practitioner \| PractitionerRole \| Organization \| Patient \| RelatedPerson \| Device)	Who/what is requesting service
performerType	Σ	0..1	CodeableConcept	Performer role Binding: Participant Roles (Example)
performer	Σ	0..*	Reference(Practitioner \| PractitionerRole \| Organization \| CareTeam \| HealthcareService \| Patient \| Device \| RelatedPerson)	Requested performer
location	Σ	0..*	CodeableReference(Location)	Requested location Binding: ServiceDeliveryLocationRoleType (Example)
reason	Σ	0..*	CodeableReference(Condition \| Observation \| DiagnosticReport \| DocumentReference \| DetectedIssue)	Explanation/Justification for procedure or service Binding: Procedure Reason Codes (Example)
insurance		0..*	Reference(Coverage \| ClaimResponse)	Associated insurance coverage
supportingInfo		0..*	CodeableReference(Any)	Additional clinical information
specimen	Σ	0..*	Reference(Specimen)	Procedure Samples
bodySite	Σ C	0..*	CodeableConcept	Coded location on Body Binding: SNOMED CT Body Structures (Example)
bodyStructure	Σ C	0..1	Reference(BodyStructure)	BodyStructure-based location on the body
note		0..*	Annotation	Comments
patientInstruction		0..*	BackboneElement	Patient or consumer-oriented instructions
instruction[x]	Σ	0..1		Patient or consumer-oriented instructions
instructionMarkdown			markdown
instructionReference			Reference(DocumentReference)
relevantHistory		0..*	Reference(Provenance)	Request provenance
Documentation for this format

See the Extensions for this resource

UML Diagram (Legend)

XML Template

<ServiceRequest xmlns="http://hl7.org/fhir"> 
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <identifier><!-- 0..* Identifier Identifiers assigned to this order --></identifier>
 <instantiatesCanonical><!-- 0..* canonical(ActivityDefinition|PlanDefinition) Instantiates FHIR protocol or definition --></instantiatesCanonical>
 <instantiatesUri value="[uri]"/><!-- 0..* Instantiates external protocol or definition -->
 <basedOn><!-- 0..* Reference(CarePlan|MedicationRequest|ServiceRequest) What request fulfills --></basedOn>
 <replaces><!-- 0..* Reference(ServiceRequest) What request replaces --></replaces>
 <requisition><!-- 0..1 Identifier Composite Request ID --></requisition>
 <status value="[code]"/><!-- 1..1 draft | active | on-hold | revoked | completed | entered-in-error | unknown -->
 <intent value="[code]"/><!-- 1..1 proposal | plan | directive | order + -->
 <category><!-- 0..* CodeableConcept Classification of service --></category>
 <priority value="[code]"/><!-- 0..1 routine | urgent | asap | stat -->
 <doNotPerform value="[boolean]"/><!-- 0..1 True if service/procedure should not be performed -->
 <code><!-- I 0..1 CodeableReference(ActivityDefinition|PlanDefinition) What is being requested/ordered --></code>
 <orderDetail>  <!-- I 0..* Additional order information -->
  <parameterFocus><!-- 0..1 CodeableReference(BiologicallyDerivedProduct|Device|
    DeviceDefinition|DeviceRequest|Medication|MedicationRequest|Substance|
    SupplyRequest) The context of the order details by reference --></parameterFocus>
  <parameter>  <!-- 0..1 The parameter details for the service being requested -->
   <code><!-- 1..1 CodeableConcept The detail of the order being requested --></code>
   <value[x]><!-- 0..1 Quantity|Ratio|Range|boolean|CodeableConcept|string|
     Period The value for the order detail --></value[x]>
  </parameter>
 </orderDetail>
 <quantity[x]><!-- 0..1 Quantity|Ratio|Range Service amount --></quantity[x]>
 <subject><!-- 1..1 Reference(Device|Group|Location|Patient) Individual or Entity the service is ordered for --></subject>
 <focus><!-- 0..* Reference(Any) What the service request is about, when it is not about the subject of record --></focus>
 <encounter><!-- 0..1 Reference(Encounter) Encounter in which the request was created --></encounter>
 <occurrence[x]><!-- 0..1 dateTime|Period|Timing When service should occur --></occurrence[x]>
 <asNeeded[x]><!-- 0..1 boolean|CodeableConcept Preconditions for service --></asNeeded[x]>
 <authoredOn value="[dateTime]"/><!-- 0..1 Date request signed -->
 <requester><!-- 0..1 Reference(Device|Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) Who/what is requesting service --></requester>
 <performerType><!-- 0..1 CodeableConcept Performer role --></performerType>
 <performer><!-- 0..* Reference(CareTeam|Device|HealthcareService|Organization|
   Patient|Practitioner|PractitionerRole|RelatedPerson) Requested performer --></performer>
 <location><!-- 0..* CodeableReference(Location) Requested location  --></location>
 <reason><!-- 0..* CodeableReference(Condition|DetectedIssue|DiagnosticReport|
   DocumentReference|Observation) Explanation/Justification for procedure or service --></reason>
 <insurance><!-- 0..* Reference(ClaimResponse|Coverage) Associated insurance coverage --></insurance>
 <supportingInfo><!-- 0..* CodeableReference(Any) Additional clinical information --></supportingInfo>
 <specimen><!-- 0..* Reference(Specimen) Procedure Samples --></specimen>
 <bodySite><!-- I 0..* CodeableConcept Coded location on Body --></bodySite>
 <bodyStructure><!-- I 0..1 Reference(BodyStructure) BodyStructure-based location on the body --></bodyStructure>
 <note><!-- 0..* Annotation Comments --></note>
 <patientInstruction>  <!-- 0..* Patient or consumer-oriented instructions -->
  <instruction[x]><!-- 0..1 markdown|Reference(DocumentReference) Patient or consumer-oriented instructions --></instruction[x]>
 </patientInstruction>
 <relevantHistory><!-- 0..* Reference(Provenance) Request provenance --></relevantHistory>
</ServiceRequest>

JSON Template

{
  "resourceType" : "ServiceRequest",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "identifier" : [{ Identifier }], // Identifiers assigned to this order
  "instantiatesCanonical" : ["<canonical(ActivityDefinition|PlanDefinition)>"], // Instantiates FHIR protocol or definition
  "instantiatesUri" : ["<uri>"], // Instantiates external protocol or definition
  "basedOn" : [{ Reference(CarePlan|MedicationRequest|ServiceRequest) }], // What request fulfills
  "replaces" : [{ Reference(ServiceRequest) }], // What request replaces
  "requisition" : { Identifier }, // Composite Request ID
  "status" : "<code>", // R!  draft | active | on-hold | revoked | completed | entered-in-error | unknown
  "intent" : "<code>", // R!  proposal | plan | directive | order +
  "category" : [{ CodeableConcept }], // Classification of service
  "priority" : "<code>", // routine | urgent | asap | stat
  "doNotPerform" : <boolean>, // True if service/procedure should not be performed
  "code" : { CodeableReference(ActivityDefinition|PlanDefinition) }, // I What is being requested/ordered
  "orderDetail" : [{ // I Additional order information
    "parameterFocus" : { CodeableReference(BiologicallyDerivedProduct|Device|
    DeviceDefinition|DeviceRequest|Medication|MedicationRequest|Substance|
    SupplyRequest) }, // The context of the order details by reference
    "parameter" : { // The parameter details for the service being requested
      "code" : { CodeableConcept }, // R!  The detail of the order being requested
      // value[x]: The value for the order detail. One of these 7:
      "valueQuantity" : { Quantity },
      "valueRatio" : { Ratio },
      "valueRange" : { Range },
      "valueBoolean" : <boolean>,
      "valueCodeableConcept" : { CodeableConcept },
      "valueString" : "<string>",
      "valuePeriod" : { Period }
    }
  }],
  // quantity[x]: Service amount. One of these 3:
  "quantityQuantity" : { Quantity },
  "quantityRatio" : { Ratio },
  "quantityRange" : { Range },
  "subject" : { Reference(Device|Group|Location|Patient) }, // R!  Individual or Entity the service is ordered for
  "focus" : [{ Reference(Any) }], // What the service request is about, when it is not about the subject of record
  "encounter" : { Reference(Encounter) }, // Encounter in which the request was created
  // occurrence[x]: When service should occur. One of these 3:
  "occurrenceDateTime" : "<dateTime>",
  "occurrencePeriod" : { Period },
  "occurrenceTiming" : { Timing },
  // asNeeded[x]: Preconditions for service. One of these 2:
  "asNeededBoolean" : <boolean>,
  "asNeededCodeableConcept" : { CodeableConcept },
  "authoredOn" : "<dateTime>", // Date request signed
  "requester" : { Reference(Device|Organization|Patient|Practitioner|
   PractitionerRole|RelatedPerson) }, // Who/what is requesting service
  "performerType" : { CodeableConcept }, // Performer role
  "performer" : [{ Reference(CareTeam|Device|HealthcareService|Organization|
   Patient|Practitioner|PractitionerRole|RelatedPerson) }], // Requested performer
  "location" : [{ CodeableReference(Location) }], // Requested location 
  "reason" : [{ CodeableReference(Condition|DetectedIssue|DiagnosticReport|
   DocumentReference|Observation) }], // Explanation/Justification for procedure or service
  "insurance" : [{ Reference(ClaimResponse|Coverage) }], // Associated insurance coverage
  "supportingInfo" : [{ CodeableReference(Any) }], // Additional clinical information
  "specimen" : [{ Reference(Specimen) }], // Procedure Samples
  "bodySite" : [{ CodeableConcept }], // I Coded location on Body
  "bodyStructure" : { Reference(BodyStructure) }, // I BodyStructure-based location on the body
  "note" : [{ Annotation }], // Comments
  "patientInstruction" : [{ // Patient or consumer-oriented instructions
    // instruction[x]: Patient or consumer-oriented instructions. One of these 2:
    "instructionMarkdown" : "<markdown>",
    "instructionReference" : { Reference(DocumentReference) }
  }],
  "relevantHistory" : [{ Reference(Provenance) }] // Request provenance
}

Turtle Template

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


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

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:identifier  ( [ Identifier ] ... ) ; # 0..* Identifiers assigned to this order
  fhir:instantiatesCanonical  ( [ canonical(ActivityDefinition|PlanDefinition) ] ... ) ; # 0..* Instantiates FHIR protocol or definition
  fhir:instantiatesUri  ( [ uri ] ... ) ; # 0..* Instantiates external protocol or definition
  fhir:basedOn  ( [ Reference(CarePlan|MedicationRequest|ServiceRequest) ] ... ) ; # 0..* What request fulfills
  fhir:replaces  ( [ Reference(ServiceRequest) ] ... ) ; # 0..* What request replaces
  fhir:requisition [ Identifier ] ; # 0..1 Composite Request ID
  fhir:status [ code ] ; # 1..1 draft | active | on-hold | revoked | completed | entered-in-error | unknown
  fhir:intent [ code ] ; # 1..1 proposal | plan | directive | order +
  fhir:category  ( [ CodeableConcept ] ... ) ; # 0..* Classification of service
  fhir:priority [ code ] ; # 0..1 routine | urgent | asap | stat
  fhir:doNotPerform [ boolean ] ; # 0..1 True if service/procedure should not be performed
  fhir:code [ CodeableReference(ActivityDefinition|PlanDefinition) ] ; # 0..1 I What is being requested/ordered
  fhir:orderDetail ( [ # 0..* I Additional order information
    fhir:parameterFocus [ CodeableReference(BiologicallyDerivedProduct|Device|DeviceDefinition|DeviceRequest|Medication|
  MedicationRequest|Substance|SupplyRequest) ] ; # 0..1 The context of the order details by reference
    fhir:parameter [ # 0..1 The parameter details for the service being requested
      fhir:code [ CodeableConcept ] ; # 1..1 The detail of the order being requested
      # value[x] : 0..1 The value for the order detail. One of these 7
        fhir:value [  a fhir:Quantity ; Quantity ]
        fhir:value [  a fhir:Ratio ; Ratio ]
        fhir:value [  a fhir:Range ; Range ]
        fhir:value [  a fhir:boolean ; boolean ]
        fhir:value [  a fhir:CodeableConcept ; CodeableConcept ]
        fhir:value [  a fhir:string ; string ]
        fhir:value [  a fhir:Period ; Period ]
    ] ;
  ] ... ) ;
  # quantity[x] : 0..1 Service amount. One of these 3
    fhir:quantity [  a fhir:Quantity ; Quantity ]
    fhir:quantity [  a fhir:Ratio ; Ratio ]
    fhir:quantity [  a fhir:Range ; Range ]
  fhir:subject [ Reference(Device|Group|Location|Patient) ] ; # 1..1 Individual or Entity the service is ordered for
  fhir:focus  ( [ Reference(Any) ] ... ) ; # 0..* What the service request is about, when it is not about the subject of record
  fhir:encounter [ Reference(Encounter) ] ; # 0..1 Encounter in which the request was created
  # occurrence[x] : 0..1 When service should occur. One of these 3
    fhir:occurrence [  a fhir:dateTime ; dateTime ]
    fhir:occurrence [  a fhir:Period ; Period ]
    fhir:occurrence [  a fhir:Timing ; Timing ]
  # asNeeded[x] : 0..1 Preconditions for service. One of these 2
    fhir:asNeeded [  a fhir:boolean ; boolean ]
    fhir:asNeeded [  a fhir:CodeableConcept ; CodeableConcept ]
  fhir:authoredOn [ dateTime ] ; # 0..1 Date request signed
  fhir:requester [ Reference(Device|Organization|Patient|Practitioner|PractitionerRole|RelatedPerson) ] ; # 0..1 Who/what is requesting service
  fhir:performerType [ CodeableConcept ] ; # 0..1 Performer role
  fhir:performer  ( [ Reference(CareTeam|Device|HealthcareService|Organization|Patient|Practitioner|
  PractitionerRole|RelatedPerson) ] ... ) ; # 0..* Requested performer
  fhir:location  ( [ CodeableReference(Location) ] ... ) ; # 0..* Requested location
  fhir:reason  ( [ CodeableReference(Condition|DetectedIssue|DiagnosticReport|DocumentReference|Observation) ] ... ) ; # 0..* Explanation/Justification for procedure or service
  fhir:insurance  ( [ Reference(ClaimResponse|Coverage) ] ... ) ; # 0..* Associated insurance coverage
  fhir:supportingInfo  ( [ CodeableReference(Any) ] ... ) ; # 0..* Additional clinical information
  fhir:specimen  ( [ Reference(Specimen) ] ... ) ; # 0..* Procedure Samples
  fhir:bodySite  ( [ CodeableConcept ] ... ) ; # 0..* I Coded location on Body
  fhir:bodyStructure [ Reference(BodyStructure) ] ; # 0..1 I BodyStructure-based location on the body
  fhir:note  ( [ Annotation ] ... ) ; # 0..* Comments
  fhir:patientInstruction ( [ # 0..* Patient or consumer-oriented instructions
    # instruction[x] : 0..1 Patient or consumer-oriented instructions. One of these 2
      fhir:instruction [  a fhir:markdown ; markdown ]
      fhir:instruction [  a fhir:Reference ; Reference(DocumentReference) ]
  ] ... ) ;
  fhir:relevantHistory  ( [ Reference(Provenance) ] ... ) ; # 0..* Request provenance
]

Changes since Release 4

ServiceRequest

ServiceRequest.code

Type changed from CodeableConcept to CodeableReference

ServiceRequest.orderDetail

Type changed from CodeableConcept to BackboneElement

ServiceRequest.orderDetail.parameterFocus

Added Element

ServiceRequest.orderDetail.parameter

Added Element

ServiceRequest.orderDetail.parameter.code

Added Mandatory Element

ServiceRequest.orderDetail.parameter.value[x]

Added Element

ServiceRequest.focus

Added Element

ServiceRequest.location

Added Element

ServiceRequest.reason

Added Element

ServiceRequest.supportingInfo

Type changed from Reference(Resource) to CodeableReference

ServiceRequest.bodyStructure

Added Element

ServiceRequest.patientInstruction

Max Cardinality changed from 1 to *
Type changed from string to BackboneElement

ServiceRequest.patientInstruction.instruction[x]

Added Element

ServiceRequest.locationCode

deleted

ServiceRequest.locationReference

deleted

ServiceRequest.reasonCode

deleted

ServiceRequest.reasonReference

deleted

See the Full Difference for further information

This analysis is available as XML or JSON.

Additional definitions: Master Definition XML + JSON, XML Schema/Schematron + JSON Schema, ShEx (for Turtle) + see the extensions, the spreadsheet version & the dependency analysis

12.18.4.1 Terminology Bindings

Path	ValueSet	Type	Documentation
ServiceRequest.status	RequestStatus	Required	Codes identifying the lifecycle stage of a request.
ServiceRequest.intent	RequestIntent	Required	Codes indicating the degree of authority/intentionality associated with a request.
ServiceRequest.category	ServiceRequestCategoryCodes	Example	An example value set of SNOMED CT concepts that can classify a requested service
ServiceRequest.priority	RequestPriority	Required	Identifies the level of importance to be assigned to actioning the request.
ServiceRequest.code	ProcedureCodesSNOMEDCT	Example	Procedure Code: All SNOMED CT procedure codes.
ServiceRequest.asNeeded[x]	SNOMEDCTMedicationAsNeededReasonCodes	Example	This value set includes all clinical findings from SNOMED CT - provided as an exemplar value set.
ServiceRequest.performerType	ParticipantRoles	Example	Roles of participants that may be included in a care team. Defined as: Healthcare professional (occupation) or Services (qualifier value).
ServiceRequest.location	ServiceDeliveryLocationRoleType	Example	A role of a place that further classifies the setting (e.g., accident site, road side, work site, community location) in which services are delivered.
ServiceRequest.reason	ProcedureReasonCodes	Example	This example value set defines the set of codes that can be used to indicate a reason for a procedure.
ServiceRequest.bodySite	SNOMEDCTBodyStructures	Example	This value set includes all codes from SNOMED CT where concept is-a 442083009 (Anatomical or acquired body site (body structure)).

Path

ValueSet

Type

Documentation

ServiceRequest.status

RequestStatus

Required

Codes identifying the lifecycle stage of a request.

ServiceRequest.intent

RequestIntent

Required

Codes indicating the degree of authority/intentionality associated with a request.

ServiceRequest.category

ServiceRequestCategoryCodes

Example

An example value set of SNOMED CT concepts that can classify a requested service

ServiceRequest.priority

RequestPriority

Required

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

ServiceRequest.code

ProcedureCodesSNOMEDCT

Example

Procedure Code: All SNOMED CT procedure codes.

ServiceRequest.asNeeded[x]

SNOMEDCTMedicationAsNeededReasonCodes

Example

This value set includes all clinical findings from SNOMED CT - provided as an exemplar value set.

ServiceRequest.performerType

ParticipantRoles

Example

Roles of participants that may be included in a care team. Defined as: Healthcare professional (occupation) or Services (qualifier value).

ServiceRequest.location

ServiceDeliveryLocationRoleType icon

Example

A role of a place that further classifies the setting (e.g., accident site, road side, work site, community location) in which services are delivered.

ServiceRequest.reason

ProcedureReasonCodes

Example

This example value set defines the set of codes that can be used to indicate a reason for a procedure.

ServiceRequest.bodySite

SNOMEDCTBodyStructures

Example

This value set includes all codes from SNOMED CT icon where concept is-a 442083009 (Anatomical or acquired body site (body structure)).

12.18.4.2 Constraints

UniqueKey

Level

Location

Description

Expression

bdystr-1

Rule

(base)

bodyStructure SHALL only be present if bodySite is not present

bodySite.exists() implies bodyStructure.empty()

prr-1

Rule

(base)

orderDetail SHALL only be present if code is present

orderDetail.empty() or code.exists()

12.18.5 Notes:

Many service requests will create a need to specify a specimen, body site, or body system. The request code will often have this information embedded in it - for example, 'serum glucose' or 'chest x-ray'. Alternatively, the specimen or bodysite element may be used to specify it.
The ServiceRequest should only reference the Specimen resource directly when the diagnostic investigation is requested on already existing specimens. Conversely, if the request is entered first with an uncollected specimen, the Specimen resource will reference the ServiceRequest resource when it is created.
The reasonCode element is often for billing purposes. It may relate to the resources referred to in supportingInfo element and may be used to decide how a procedure or diagnostic investigation will be performed, or even if it will be performed at all

12.18.6 Search Parameters

Search parameters for this resource. See also the full list of search parameters for this resource, and check the Extensions registry for search parameters on extensions related to this resource. The common parameters also apply. See Searching for more information about searching in REST, messaging, and services.

Name	Type	Description	Expression	In Common
authored	date	Date request signed	ServiceRequest.authoredOn
based-on	reference	What request fulfills	ServiceRequest.basedOn (CarePlan, MedicationRequest, ServiceRequest)
body-site	token	Where procedure is going to be done	ServiceRequest.bodySite
body-structure	reference	Body structure Where procedure is going to be done	ServiceRequest.bodyStructure (BodyStructure)
category	token	Classification of service	ServiceRequest.category
code-concept	token	What is being requested/ordered	ServiceRequest.code.concept
code-reference	reference	What is being requested/ordered	ServiceRequest.code.reference
encounter	reference	An encounter in which this request is made	ServiceRequest.encounter (Encounter)	29 Resources
identifier	token	Identifiers assigned to this order	ServiceRequest.identifier	65 Resources
instantiates-canonical	reference	Instantiates FHIR protocol or definition	ServiceRequest.instantiatesCanonical (PlanDefinition, ActivityDefinition)
instantiates-uri	uri	Instantiates external protocol or definition	ServiceRequest.instantiatesUri
intent	token	proposal \| plan \| directive \| order +	ServiceRequest.intent
occurrence	date	When service should occur	ServiceRequest.occurrence.ofType(dateTime) \| ServiceRequest.occurrence.ofType(Period) \| ServiceRequest.occurrence.ofType(Timing)
patient	reference	Search by subject - a patient	ServiceRequest.subject.where(resolve() is Patient) (Patient)	66 Resources
performer	reference	Requested performer	ServiceRequest.performer (Practitioner, Organization, CareTeam, Device, Patient, HealthcareService, PractitionerRole, RelatedPerson)
performer-type	token	Performer role	ServiceRequest.performerType
priority	token	routine \| urgent \| asap \| stat	ServiceRequest.priority
replaces	reference	What request replaces	ServiceRequest.replaces (ServiceRequest)
requester	reference	Who/what is requesting service	ServiceRequest.requester (Practitioner, Organization, Device, Patient, PractitionerRole, RelatedPerson)
requisition	token	Composite Request ID	ServiceRequest.requisition
specimen	reference	Specimen to be tested	ServiceRequest.specimen (Specimen)
status	token	draft \| active \| on-hold \| revoked \| completed \| entered-in-error \| unknown	ServiceRequest.status
subject	reference	Search by subject	ServiceRequest.subject (Group, Device, Patient, Location)