The Task profile defines the conformance expectations for a Task, regardless of whether it is a positive or negative statement. The TaskDone and TaskRejected profiles represent the positive and negative statements for a task.

For a more complete discussion of representation of negation within US Quality Core and quality improvement artifacts, see the Negation in US Quality Core topic.

USCDI+ Quality Element Support Expectations

Systems are expected to support this profile as part of implementing USCDI+ Quality V2 in FHIR and meeting the conformance requirements of this guide.

The following elements are specifically relevant to USCDI+ Quality V2 data classes and elements. Systems are expected to support these elements as applicable to their role in US Quality Core data exchange. See the Must Support section of this guide for more information. These elements are flagged as (USCDI+ Quality) in the formal profile views.

USCDI+ Quality Elements:

• Key Elements Table
• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Task	C	0..*	USQualityCoreTask	A task to be performed Constraints: inv-1, tsk-1
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!Σ	1..1	code	(USCDI+ Quality) The potential performer who claimed ownership of the task has decided not to execute it prior to performing any action Binding: TaskStatus (required): The current status of the task. Fixed Value: rejected
statusReason	Σ	1..1	CodeableConcept	(USCDI+ Quality) Reason for current status Binding: US Quality Core Negation Reason Codes (extensible)
intent	Σ	1..1	code	unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
executionPeriod	Σ	1..1	Period	(USCDI+ Quality) The time action first taken meets expectation of the rejected use case.
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Task.status	Base	required	TaskStatus	📍4.0.1	FHIR Std.
Task.statusReason	Base	extensible	US Quality Core Negation Reason Codes	📦1.0.0-ballot	This IG
Task.intent	Base	required	TaskIntent	📍4.0.1	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Task	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Task	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-4	error	Task	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-5	error	Task	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Task	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()
inv-1	error	Task	Last modified date must be greater than or equal to authored-on date.	lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn
tsk-1	error	Task	when code is present, either at least one coding or a codeOptions extension shall be provided, but not both	code.empty() or (code.extension('http://hl7.org/fhir/StructureDefinition/codeOptions').exists() xor code.coding.exists())

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Task		0..*	USQualityCoreTask	A task to be performed
status		1..1	code	(USCDI+ Quality) The potential performer who claimed ownership of the task has decided not to execute it prior to performing any action Fixed Value: rejected
statusReason		1..1	CodeableConcept	(USCDI+ Quality) Reason for current status Binding: US Quality Core Negation Reason Codes (extensible)
code
Slices for extension				Content/Rules for all slices
extension:codeOptions		0..1	CodeOptions(5.3.0)	(USCDI+ Quality) Url of a value set of candidate tasks
executionPeriod		1..1	Period	(USCDI+ Quality) The time action first taken meets expectation of the rejected use case.
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
Task.statusReason	Base	extensible	US Quality Core Negation Reason Codes	📦1.0.0-ballot	This IG

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Task	C	0..*	USQualityCoreTask	A task to be performed Constraints: inv-1, tsk-1
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier		0..*	Identifier	Task Instance Identifier
instantiatesCanonical	Σ	0..1	canonical(ActivityDefinition)	Formal definition of task
instantiatesUri	Σ	0..1	uri	Formal definition of task
basedOn	Σ	0..*	Reference(Resource)	(USCDI+ Quality) Request fulfilled by this task
groupIdentifier	Σ	0..1	Identifier	Requisition or grouper id
partOf	Σ	0..*	Reference(Task)	Composite task
status	?!Σ	1..1	code	(USCDI+ Quality) The potential performer who claimed ownership of the task has decided not to execute it prior to performing any action Binding: TaskStatus (required): The current status of the task. Fixed Value: rejected
statusReason	Σ	1..1	CodeableConcept	(USCDI+ Quality) Reason for current status Binding: US Quality Core Negation Reason Codes (extensible)
businessStatus	Σ	0..1	CodeableConcept	E.g. "Specimen collected", "IV prepped" Binding Description: (example): The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.
intent	Σ	1..1	code	unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
priority		0..1	code	routine | urgent | asap | stat Binding: RequestPriority (required): The task's priority.
code	ΣC	0..1	CodeableConcept	(USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
id		0..1	string	Unique id for inter-element referencing
Slices for extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
extension:codeOptions	C	0..1	canonical(ValueSet)	(USCDI+ Quality) Url of a value set of candidate tasks URL: http://hl7.org/fhir/StructureDefinition/codeOptions
coding	Σ	0..*	Coding	Code defined by a terminology system
text	Σ	0..1	string	Plain text representation of the concept
description	Σ	0..1	string	Human-readable explanation of task
focus	Σ	0..1	Reference(Resource)	(USCDI+ Quality) What task is acting on
for	Σ	0..1	Reference(US Quality Core Patient)	(USCDI+ Quality) Beneficiary of the Task
encounter	Σ	0..1	Reference(US Quality Core Encounter)	Healthcare event during which this task originated
executionPeriod	Σ	1..1	Period	(USCDI+ Quality) The time action first taken meets expectation of the rejected use case.
authoredOn	C	0..1	dateTime	Task Creation Date
lastModified	ΣC	0..1	dateTime	Task Last Modified Date
requester	Σ	0..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson)	(USCDI+ Quality) Who is asking for task to be done
performerType		0..*	CodeableConcept	Requested performer Binding: ProcedurePerformerRoleCodes (preferred): The type(s) of task performers allowed.
owner	Σ	0..1	Reference(Practitioner | PractitionerRole | Organization | CareTeam | HealthcareService | Patient | Device | RelatedPerson)	Responsible individual
location	Σ	0..1	Reference(Location)	Where task occurs
reasonCode		0..1	CodeableConcept	(USCDI+ Quality) Why task is needed Binding Description: (example): Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
reasonReference		0..1	Reference(Resource)	Why task is needed
insurance		0..*	Reference(Coverage | ClaimResponse)	Associated insurance coverage
note		0..*	Annotation	Comments made about the task
relevantHistory		0..*	Reference(Provenance)	Key events in history of the Task
restriction		0..1	BackboneElement	Constraints on fulfillment tasks
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
repetitions		0..1	positiveInt	How many times to repeat
period		0..1	Period	When fulfillment sought
recipient		0..*	Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Group | Organization)	For whom is fulfillment sought?
input		0..*	BackboneElement	Information used to perform task
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
type		1..1	CodeableConcept	Label for the input Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.
value[x]		1..1		Content to use in performing the task
valueBase64Binary			base64Binary
valueBoolean			boolean
valueCanonical			canonical(Any)
valueCode			code
valueDate			date
valueDateTime			dateTime
valueDecimal			decimal
valueId			id
valueInstant			instant
valueInteger			integer
valueMarkdown			markdown
valueOid			oid
valuePositiveInt			positiveInt
valueString			string
valueTime			time
valueUnsignedInt			unsignedInt
valueUri			uri
valueUrl			url
valueUuid			uuid
valueAddress			Address
valueAge			Age
valueAnnotation			Annotation
valueAttachment			Attachment
valueCodeableConcept			CodeableConcept
valueCoding			Coding
valueContactPoint			ContactPoint
valueCount			Count
valueDistance			Distance
valueDuration			Duration
valueHumanName			HumanName
valueIdentifier			Identifier
valueMoney			Money
valuePeriod			Period
valueQuantity			Quantity
valueRange			Range
valueRatio			Ratio
valueReference			Reference(Any)
valueSampledData			SampledData
valueSignature			Signature
valueTiming			Timing
valueContactDetail			ContactDetail
valueContributor			Contributor
valueDataRequirement			DataRequirement
valueExpression			Expression
valueParameterDefinition			ParameterDefinition
valueRelatedArtifact			RelatedArtifact
valueTriggerDefinition			TriggerDefinition
valueUsageContext			UsageContext
valueDosage			Dosage
valueMeta			Meta
output		0..*	BackboneElement	Information produced as part of task
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
type		1..1	CodeableConcept	Label for output Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.
value[x]		1..1		Result of output
valueBase64Binary			base64Binary
valueBoolean			boolean
valueCanonical			canonical(Any)
valueCode			code
valueDate			date
valueDateTime			dateTime
valueDecimal			decimal
valueId			id
valueInstant			instant
valueInteger			integer
valueMarkdown			markdown
valueOid			oid
valuePositiveInt			positiveInt
valueString			string
valueTime			time
valueUnsignedInt			unsignedInt
valueUri			uri
valueUrl			url
valueUuid			uuid
valueAddress			Address
valueAge			Age
valueAnnotation			Annotation
valueAttachment			Attachment
valueCodeableConcept			CodeableConcept
valueCoding			Coding
valueContactPoint			ContactPoint
valueCount			Count
valueDistance			Distance
valueDuration			Duration
valueHumanName			HumanName
valueIdentifier			Identifier
valueMoney			Money
valuePeriod			Period
valueQuantity			Quantity
valueRange			Range
valueRatio			Ratio
valueReference			Reference(Any)
valueSampledData			SampledData
valueSignature			Signature
valueTiming			Timing
valueContactDetail			ContactDetail
valueContributor			Contributor
valueDataRequirement			DataRequirement
valueExpression			Expression
valueParameterDefinition			ParameterDefinition
valueRelatedArtifact			RelatedArtifact
valueTriggerDefinition			TriggerDefinition
valueUsageContext			UsageContext
valueDosage			Dosage
valueMeta			Meta
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Task.language	Base	preferred	Common Languages	📍4.0.1	FHIR Std.
Task.status	Base	required	TaskStatus	📍4.0.1	FHIR Std.
Task.statusReason	Base	extensible	US Quality Core Negation Reason Codes	📦1.0.0-ballot	This IG
Task.businessStatus	Base	example		Not State	Unknown
Task.intent	Base	required	TaskIntent	📍4.0.1	FHIR Std.
Task.priority	Base	required	Request priority	📍4.0.1	FHIR Std.
Task.code	Base	preferred	Task Codes	📦4.0.1	FHIR Std.
Task.performerType	Base	preferred	Procedure Performer Role Codes	📍4.0.1	FHIR Std.
Task.reasonCode	Base	example		Not State	Unknown
Task.input.type	Base	example		Not State	Unknown
Task.output.type	Base	example		Not State	Unknown

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Task	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Task	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-4	error	Task	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-5	error	Task	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Task	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()
inv-1	error	Task	Last modified date must be greater than or equal to authored-on date.	lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn
tsk-1	error	Task	when code is present, either at least one coding or a codeOptions extension shall be provided, but not both	code.empty() or (code.extension('http://hl7.org/fhir/StructureDefinition/codeOptions').exists() xor code.coding.exists())

Key Elements View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Task	C	0..*	USQualityCoreTask	A task to be performed Constraints: inv-1, tsk-1
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!Σ	1..1	code	(USCDI+ Quality) The potential performer who claimed ownership of the task has decided not to execute it prior to performing any action Binding: TaskStatus (required): The current status of the task. Fixed Value: rejected
statusReason	Σ	1..1	CodeableConcept	(USCDI+ Quality) Reason for current status Binding: US Quality Core Negation Reason Codes (extensible)
intent	Σ	1..1	code	unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
executionPeriod	Σ	1..1	Period	(USCDI+ Quality) The time action first taken meets expectation of the rejected use case.
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Task.status	Base	required	TaskStatus	📍4.0.1	FHIR Std.
Task.statusReason	Base	extensible	US Quality Core Negation Reason Codes	📦1.0.0-ballot	This IG
Task.intent	Base	required	TaskIntent	📍4.0.1	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Task	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Task	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-4	error	Task	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-5	error	Task	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Task	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()
inv-1	error	Task	Last modified date must be greater than or equal to authored-on date.	lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn
tsk-1	error	Task	when code is present, either at least one coding or a codeOptions extension shall be provided, but not both	code.empty() or (code.extension('http://hl7.org/fhir/StructureDefinition/codeOptions').exists() xor code.coding.exists())

Differential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Task		0..*	USQualityCoreTask	A task to be performed
status		1..1	code	(USCDI+ Quality) The potential performer who claimed ownership of the task has decided not to execute it prior to performing any action Fixed Value: rejected
statusReason		1..1	CodeableConcept	(USCDI+ Quality) Reason for current status Binding: US Quality Core Negation Reason Codes (extensible)
code
Slices for extension				Content/Rules for all slices
extension:codeOptions		0..1	CodeOptions(5.3.0)	(USCDI+ Quality) Url of a value set of candidate tasks
executionPeriod		1..1	Period	(USCDI+ Quality) The time action first taken meets expectation of the rejected use case.
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
Task.statusReason	Base	extensible	US Quality Core Negation Reason Codes	📦1.0.0-ballot	This IG

Snapshot ViewView

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Task	C	0..*	USQualityCoreTask	A task to be performed Constraints: inv-1, tsk-1
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier		0..*	Identifier	Task Instance Identifier
instantiatesCanonical	Σ	0..1	canonical(ActivityDefinition)	Formal definition of task
instantiatesUri	Σ	0..1	uri	Formal definition of task
basedOn	Σ	0..*	Reference(Resource)	(USCDI+ Quality) Request fulfilled by this task
groupIdentifier	Σ	0..1	Identifier	Requisition or grouper id
partOf	Σ	0..*	Reference(Task)	Composite task
status	?!Σ	1..1	code	(USCDI+ Quality) The potential performer who claimed ownership of the task has decided not to execute it prior to performing any action Binding: TaskStatus (required): The current status of the task. Fixed Value: rejected
statusReason	Σ	1..1	CodeableConcept	(USCDI+ Quality) Reason for current status Binding: US Quality Core Negation Reason Codes (extensible)
businessStatus	Σ	0..1	CodeableConcept	E.g. "Specimen collected", "IV prepped" Binding Description: (example): The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.
intent	Σ	1..1	code	unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance Binding: TaskIntent (required): Distinguishes whether the task is a proposal, plan or full order.
priority		0..1	code	routine | urgent | asap | stat Binding: RequestPriority (required): The task's priority.
code	ΣC	0..1	CodeableConcept	(USCDI+ Quality) Task Type Binding: TaskCode (preferred): Codes to identify what the task involves. These will typically be specific to a particular workflow
id		0..1	string	Unique id for inter-element referencing
Slices for extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
extension:codeOptions	C	0..1	canonical(ValueSet)	(USCDI+ Quality) Url of a value set of candidate tasks URL: http://hl7.org/fhir/StructureDefinition/codeOptions
coding	Σ	0..*	Coding	Code defined by a terminology system
text	Σ	0..1	string	Plain text representation of the concept
description	Σ	0..1	string	Human-readable explanation of task
focus	Σ	0..1	Reference(Resource)	(USCDI+ Quality) What task is acting on
for	Σ	0..1	Reference(US Quality Core Patient)	(USCDI+ Quality) Beneficiary of the Task
encounter	Σ	0..1	Reference(US Quality Core Encounter)	Healthcare event during which this task originated
executionPeriod	Σ	1..1	Period	(USCDI+ Quality) The time action first taken meets expectation of the rejected use case.
authoredOn	C	0..1	dateTime	Task Creation Date
lastModified	ΣC	0..1	dateTime	Task Last Modified Date
requester	Σ	0..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson)	(USCDI+ Quality) Who is asking for task to be done
performerType		0..*	CodeableConcept	Requested performer Binding: ProcedurePerformerRoleCodes (preferred): The type(s) of task performers allowed.
owner	Σ	0..1	Reference(Practitioner | PractitionerRole | Organization | CareTeam | HealthcareService | Patient | Device | RelatedPerson)	Responsible individual
location	Σ	0..1	Reference(Location)	Where task occurs
reasonCode		0..1	CodeableConcept	(USCDI+ Quality) Why task is needed Binding Description: (example): Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
reasonReference		0..1	Reference(Resource)	Why task is needed
insurance		0..*	Reference(Coverage | ClaimResponse)	Associated insurance coverage
note		0..*	Annotation	Comments made about the task
relevantHistory		0..*	Reference(Provenance)	Key events in history of the Task
restriction		0..1	BackboneElement	Constraints on fulfillment tasks
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
repetitions		0..1	positiveInt	How many times to repeat
period		0..1	Period	When fulfillment sought
recipient		0..*	Reference(Patient | Practitioner | PractitionerRole | RelatedPerson | Group | Organization)	For whom is fulfillment sought?
input		0..*	BackboneElement	Information used to perform task
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
type		1..1	CodeableConcept	Label for the input Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.
value[x]		1..1		Content to use in performing the task
valueBase64Binary			base64Binary
valueBoolean			boolean
valueCanonical			canonical(Any)
valueCode			code
valueDate			date
valueDateTime			dateTime
valueDecimal			decimal
valueId			id
valueInstant			instant
valueInteger			integer
valueMarkdown			markdown
valueOid			oid
valuePositiveInt			positiveInt
valueString			string
valueTime			time
valueUnsignedInt			unsignedInt
valueUri			uri
valueUrl			url
valueUuid			uuid
valueAddress			Address
valueAge			Age
valueAnnotation			Annotation
valueAttachment			Attachment
valueCodeableConcept			CodeableConcept
valueCoding			Coding
valueContactPoint			ContactPoint
valueCount			Count
valueDistance			Distance
valueDuration			Duration
valueHumanName			HumanName
valueIdentifier			Identifier
valueMoney			Money
valuePeriod			Period
valueQuantity			Quantity
valueRange			Range
valueRatio			Ratio
valueReference			Reference(Any)
valueSampledData			SampledData
valueSignature			Signature
valueTiming			Timing
valueContactDetail			ContactDetail
valueContributor			Contributor
valueDataRequirement			DataRequirement
valueExpression			Expression
valueParameterDefinition			ParameterDefinition
valueRelatedArtifact			RelatedArtifact
valueTriggerDefinition			TriggerDefinition
valueUsageContext			UsageContext
valueDosage			Dosage
valueMeta			Meta
output		0..*	BackboneElement	Information produced as part of task
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
type		1..1	CodeableConcept	Label for output Binding Description: (example): Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.
value[x]		1..1		Result of output
valueBase64Binary			base64Binary
valueBoolean			boolean
valueCanonical			canonical(Any)
valueCode			code
valueDate			date
valueDateTime			dateTime
valueDecimal			decimal
valueId			id
valueInstant			instant
valueInteger			integer
valueMarkdown			markdown
valueOid			oid
valuePositiveInt			positiveInt
valueString			string
valueTime			time
valueUnsignedInt			unsignedInt
valueUri			uri
valueUrl			url
valueUuid			uuid
valueAddress			Address
valueAge			Age
valueAnnotation			Annotation
valueAttachment			Attachment
valueCodeableConcept			CodeableConcept
valueCoding			Coding
valueContactPoint			ContactPoint
valueCount			Count
valueDistance			Distance
valueDuration			Duration
valueHumanName			HumanName
valueIdentifier			Identifier
valueMoney			Money
valuePeriod			Period
valueQuantity			Quantity
valueRange			Range
valueRatio			Ratio
valueReference			Reference(Any)
valueSampledData			SampledData
valueSignature			Signature
valueTiming			Timing
valueContactDetail			ContactDetail
valueContributor			Contributor
valueDataRequirement			DataRequirement
valueExpression			Expression
valueParameterDefinition			ParameterDefinition
valueRelatedArtifact			RelatedArtifact
valueTriggerDefinition			TriggerDefinition
valueUsageContext			UsageContext
valueDosage			Dosage
valueMeta			Meta
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Task.language	Base	preferred	Common Languages	📍4.0.1	FHIR Std.
Task.status	Base	required	TaskStatus	📍4.0.1	FHIR Std.
Task.statusReason	Base	extensible	US Quality Core Negation Reason Codes	📦1.0.0-ballot	This IG
Task.businessStatus	Base	example		Not State	Unknown
Task.intent	Base	required	TaskIntent	📍4.0.1	FHIR Std.
Task.priority	Base	required	Request priority	📍4.0.1	FHIR Std.
Task.code	Base	preferred	Task Codes	📦4.0.1	FHIR Std.
Task.performerType	Base	preferred	Procedure Performer Role Codes	📍4.0.1	FHIR Std.
Task.reasonCode	Base	example		Not State	Unknown
Task.input.type	Base	example		Not State	Unknown
Task.output.type	Base	example		Not State	Unknown

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Task	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Task	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-4	error	Task	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-5	error	Task	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Task	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()
inv-1	error	Task	Last modified date must be greater than or equal to authored-on date.	lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn
tsk-1	error	Task	when code is present, either at least one coding or a codeOptions extension shall be provided, but not both	code.empty() or (code.extension('http://hl7.org/fhir/StructureDefinition/codeOptions').exists() xor code.coding.exists())

Summary

Mandatory: 1 element
Fixed: 1 element

Maturity: 4

Element Conformance Indicators by Profile Layer

Badges identify the profile layer where each conformance indicator is first introduced. Indicators introduced in an earlier layer remain applicable in later derived profiles.

Cardinality note: “Mandatory” means the element has a minimum cardinality greater than zero. For nested elements, the cardinality indicator applies when the containing element is present.

Mandatory US Quality Core Server Search Parameters

The searches below are the focused set identified by US Quality Core as needed to retrieve USCDI+ Quality data for quality measurement and reporting. See the US Core FHIR RESTful Search API Requirements for detailed information on requirements by search parameter type.

See the US Quality Core Server CapabilityStatement for complete requirements for the underlying Task resource and Search Requirement Selection for how this focused set was selected.

Servers supporting this profile SHALL support the following search parameters and search parameter combinations:

1. SHALL support searching for all Task resources for a patient using the patient search parameter.

   GET [base]/Task?patient={Patient/}[id]

   Example:

   GET [base]/Task?patient=Patient/example

   Implementation Notes: Fetches a bundle of US Quality Core Task Rejected resources matching the specified search criteria. See how to search by reference.

   Rationale for inclusion: Supports patient-scoped retrieval of Task resources for USCDI+ Quality workflows.

2. SHALL support searching for all Task resources for a patient using the combination of the patient and status search parameters.

   • Including optional support for OR search on status (e.g.status=[status],[status],...).

   GET [base]/Task?patient={Patient/}[id]&status=[status]

   Example:

   GET [base]/Task?patient=Patient/example&status=rejected

   Implementation Notes: Fetches a bundle of US Quality Core Task Rejected resources matching the specified search criteria. See how to search by reference and how to search by token.

   Rationale for inclusion: Supports patient-scoped retrieval of Task resources filtered by status; status is used to indicate negation.

3. SHALL support searching for all Task resources for a patient using the combination of the patient and code search parameters.

   • Including optional support for OR search on code (e.g.code={system|}[search_code],{system|}[search_code],...).

   GET [base]/Task?patient={Patient/}[id]&code={system|}[search_code]

   Example:

   GET [base]/Task?patient=Patient/example&code=http://www.ama-assn.org/go/cpt|99483

   Implementation Notes: Fetches a bundle of US Quality Core Task Rejected resources matching the specified search criteria. See how to search by reference and how to search by token.

   Rationale for inclusion: Supports patient-scoped retrieval of Task resources filtered by code for USCDI+ Quality workflows.