Release 5

This page is part of the FHIR Specification (v5.0.0: R5 - STU). This is the current published version. For a full list of available versions, see the Directory of published versions

Clinical Decision Support icon Work Group Maturity Level: 0Trial Use Use Context: Any

Definitions for the publishableactivitydefinition Profile.

ActivityDefinition
Element IdActivityDefinition
Definition

This resource allows for the definition of some activity to be performed, independent of a particular patient, practitioner, or other performance context.

Short DisplayThe definition of a specific activity to be taken, independent of any particular patient or context
Cardinality1..1
Invariants
Inherited by this element
cnl-0WarningName should be usable as an identifier for the module by machine processing applications such as code generationname.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')
ActivityDefinition.id
Element IdActivityDefinition.id
Definition

The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

Short DisplayLogical id of this artifact
Cardinality0..1
Typeid
Comments

Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case.

ActivityDefinition.meta
Element IdActivityDefinition.meta
Definition

The 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.

Short DisplayMetadata about the resource
Cardinality0..1
TypeMeta
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.implicitRules
Element IdActivityDefinition.implicitRules
Definition

A 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.

Short DisplayA set of rules under which this content was created
Cardinality0..1
Typeuri
Is Modifiertrue (Reason: This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation)
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 its narrative along with other profiles, value sets, etc.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.language
Element IdActivityDefinition.language
Definition

The base language in which the resource is written.

Short DisplayLanguage of the resource content
Cardinality0..1
Terminology BindingIETF language tag for a human language
The codes SHALL be taken from All Languages
Typecode
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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.text
Element IdActivityDefinition.text
Definition

A 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.

Short DisplayText summary of the resource, for human interpretation
Cardinality0..1 This element is affected by the following invariants: dom-6
TypeNarrative
Alternate Namesnarrative, html, xhtml, display
Comments

Contained resources do not have a 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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.contained
Element IdActivityDefinition.contained
Definition

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.

Short DisplayContained, inline Resources
Cardinality0..* This element is affected by the following invariants: dom-2, dom-4, dom-3, dom-5
TypeResource
Alternate Namesinline 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.

ActivityDefinition.extension
Element IdActivityDefinition.extension
Definition

An Extension

Short DisplayExtension
Cardinality0..*
TypeExtension
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
SlicingThis element introduces a set of slices. The slicing rules are:
  • unordered
  • Open
  • discriminators: value:url
ActivityDefinition.extension(knowledgeCapability)
Element IdActivityDefinition.extension:knowledgeCapability
Definition

Defines a knowledge capability afforded by this knowledge artifact.

Short Displayshareable | computable | publishable | executable
Cardinality0..*
TypeExtension(KnowledgeCapability)
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.extension(knowledgeRepresentationLevel)
Element IdActivityDefinition.extension:knowledgeRepresentationLevel
Definition

Defines a knowledge representation level provided by this knowledge artifact.

Short Displaynarrative | semi-structured | structured | executable
Cardinality0..*
TypeExtension(KnowledgeRepresentationLevel)
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.extension(artifactComment)
Element IdActivityDefinition.extension:artifactComment
Definition

A comment containing additional documentation, a review comment, usage guidance, or other relevant information from a particular user.

Short DisplayAdditional documentation, review, or usage guidance
Cardinality0..*
TypeExtension(ArtifactComment)
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.modifierExtension
Element IdActivityDefinition.modifierExtension
Definition

May 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 managable, 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).

Short DisplayExtensions that cannot be ignored
Cardinality0..*
TypeExtension
Is Modifiertrue (Reason: Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them)
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.

Alternate Namesextensions, 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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.url
Element IdActivityDefinition.url
Definition

An absolute URI that is used to identify this activity definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this activity definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the activity definition is stored on different servers.

Short DisplayCanonical identifier for this activity definition, represented as a URI (globally unique)
Cardinality1..1
Typeuri
Must Supporttrue
Requirements

Allows the activity definition to be referenced by a single globally unique identifier.

Comments

Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred. Multiple instances may share the same URL if they have a distinct version.

The determination of when to create a new version of a resource (same url, new version) vs. defining a new artifact is up to the author. Considerations for making this decision are found in Technical and Business Versions.

In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the meta.source element to indicate where the current master source of the resource can be found.

Invariants
Inherited by this element
cnl-1WarningURL should not contain | or # - these characters make processing canonical references problematicexists() implies matches('^[^|# ]+$')
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.identifier
Element IdActivityDefinition.identifier
Definition

A formal identifier that is used to identify this activity definition when it is represented in other formats, or referenced in a specification, model, design or an instance.

Short DisplayAdditional identifier for the activity definition
Cardinality0..*
TypeIdentifier
Must Supporttrue
Requirements

Allows externally provided and/or usable business identifiers to be easily associated with the module.

Comments

Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this activity definition outside of FHIR, where it is not possible to use the logical URI.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.version
Element IdActivityDefinition.version
Definition

The identifier that is used to identify this version of the activity definition when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the activity definition author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active assets.

Short DisplayBusiness version of the activity definition
Cardinality1..1
Typestring
Must Supporttrue
Comments

There may be different activity definition instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the activity definition with the format [url]|[version]. The version SHOULD NOT contain a '#' - see Business Version.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.versionAlgorithm[x]
Element IdActivityDefinition.versionAlgorithm[x]
Definition

Indicates the mechanism used to compare versions to determine which is more current.

Short DisplayHow to compare versions
Cardinality0..1
Terminology Bindingnull
The codes SHALL be taken from Version Algorithm; other codes may be used where these codes are not suitable
TypeChoice of: string, Coding
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Must Supporttrue
Comments

If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 and a 0 if the version ordering can't be successfully be determined.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.name
Element IdActivityDefinition.name
Definition

A natural language name identifying the activity definition. This name should be usable as an identifier for the module by machine processing applications such as code generation.

Short DisplayName for this activity definition (computer friendly)
Cardinality0..1 This element is affected by the following invariants: cnl-0
Typestring
Must Supporttrue
Requirements

Support human navigation and code generation.

Comments

The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.title
Element IdActivityDefinition.title
Definition

A short, descriptive, user-friendly title for the activity definition.

Short DisplayName for this activity definition (human friendly)
Cardinality1..1
Typestring
Must Supporttrue
Comments

This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.subtitle
Element IdActivityDefinition.subtitle
Definition

An explanatory or alternate title for the activity definition giving additional information about its content.

Short DisplaySubordinate title of the activity definition
Cardinality0..1
Typestring
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.status
Element IdActivityDefinition.status
Definition

The status of this activity definition. Enables tracking the life-cycle of the content.

Short Displaydraft | active | retired | unknown
Cardinality1..1
Terminology BindingThe lifecycle status of an artifact.
The codes SHALL be taken from PublicationStatus
Typecode
Is Modifiertrue (Reason: This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration)
Comments

Allows filtering of activity definitions that are appropriate for use versus not.

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.experimental
Element IdActivityDefinition.experimental
Definition

A Boolean value to indicate that this activity definition is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage.

Short DisplayFor testing purposes, not real usage
Cardinality1..1
Typeboolean
Must Supporttrue
Requirements

Enables experimental content to be developed following the same lifecycle that would be used for a production-level activity definition.

Comments

Allows filtering of activity definitions that are appropriate for use versus not.

Meaning if MissingIf absent, this resource is treated as though it is not experimental.
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.subject[x]
Element IdActivityDefinition.subject[x]
Definition

A code, group definition, or canonical reference that describes or identifies the intended subject of the activity being defined. Canonical references are allowed to support the definition of protocols for drug and substance quality specifications, and is allowed to reference a MedicinalProductDefinition, SubstanceDefinition, AdministrableProductDefinition, ManufacturedItemDefinition, or PackagedProductDefinition resource.

Short DisplayType of individual the activity definition is intended for
Cardinality0..1
Terminology BindingThe possible types of subjects for an activity (E.g. Patient, Practitioner, Organization, Location, etc.).
The codes SHALL be taken from Participant Resource Types; other codes may be used where these codes are not suitable
TypeChoice of: CodeableConcept, Reference(Group), canonical(EvidenceVariable)
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Comments

Note that the choice of canonical for the subject element was introduced in R4B to support pharmaceutical quality use cases. To ensure as much backwards-compatibility as possible, it is recommended to only use the new canonical type with these use cases.

Meaning if MissingPatient
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.date
Element IdActivityDefinition.date
Definition

The date (and optionally time) when the activity definition was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the activity definition changes.

Short DisplayDate last changed
Cardinality1..1
TypedateTime
Must Supporttrue
Alternate NamesRevision Date
Comments

The date is often not tracked until the resource is published, but may be present on draft content. Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the activity definition. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.publisher
Element IdActivityDefinition.publisher
Definition

The name of the organization or individual responsible for the release and ongoing maintenance of the activity definition.

Short DisplayName of the publisher/steward (organization or individual)
Cardinality0..1
Typestring
Must Supporttrue
Requirements

Helps establish the "authority/credibility" of the activity definition. May also allow for contact.

Comments

Usually an organization but may be an individual. The publisher (or steward) of the activity definition is the organization or individual primarily responsible for the maintenance and upkeep of the activity definition. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the activity definition. This item SHOULD be populated unless the information is available from context.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.contact
Element IdActivityDefinition.contact
Definition

Contact details to assist a user in finding and communicating with the publisher.

Short DisplayContact details for the publisher
Cardinality0..*
TypeContactDetail
Must Supporttrue
Comments

May be a web site, an email address, a telephone number, etc.

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.description
Element IdActivityDefinition.description
Definition

A free text natural language description of the activity definition from a consumer's perspective.

Short DisplayNatural language description of the activity definition
Cardinality1..1
Typemarkdown
Must Supporttrue
Comments

This description can be used to capture details such as comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the activity definition as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the activity definition is presumed to be the predominant language in the place the activity definition was created).

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.useContext
Element IdActivityDefinition.useContext
Definition

The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate activity definition instances.

Short DisplayThe context that the content is intended to support
Cardinality0..*
TypeUsageContext
Must Supporttrue
Requirements

Assist in searching for appropriate content.

Comments

When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.jurisdiction
Element IdActivityDefinition.jurisdiction
Definition

A legal or geographic region in which the activity definition is intended to be used.

Short DisplayIntended jurisdiction for activity definition (if applicable)
Cardinality0..*
Terminology BindingCountries and regions within which this artifact is targeted for use.
The codes SHALL be taken from Jurisdiction ValueSet; other codes may be used where these codes are not suitable
TypeCodeableConcept
Must Supporttrue
Comments

It may be possible for the activity definition to be used in jurisdictions other than those for which it was originally designed or intended.

DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'jurisdiction' code in the useContext element. (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#jurisdiction and useContext.valueCodeableConcept indicating the jurisdiction.)

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.purpose
Element IdActivityDefinition.purpose
Definition

Explanation of why this activity definition is needed and why it has been designed as it has.

Short DisplayWhy this activity definition is defined
Cardinality0..1
Typemarkdown
Must Supporttrue
Comments

This element does not describe the usage of the activity definition. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this activity definition.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.usage
Element IdActivityDefinition.usage
Definition

A detailed description of how the activity definition is used from a clinical perspective.

Short DisplayDescribes the clinical usage of the activity definition
Cardinality0..1
Typemarkdown
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.copyright
Element IdActivityDefinition.copyright
Definition

A copyright statement relating to the activity definition and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the activity definition.

Short DisplayUse and/or publishing restrictions
Cardinality0..1
Typemarkdown
Must Supporttrue
Requirements

Consumers must be able to determine any legal restrictions on the use of the activity definition and/or its content.

Alternate NamesLicense, Restrictions
Comments

The short copyright declaration (e.g. (c) '2015+ xyz organization' should be sent in the copyrightLabel element.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.copyrightLabel
Element IdActivityDefinition.copyrightLabel
Definition

A short string (<50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are resctricted. (e.g. 'All rights reserved', 'Some rights reserved').

Short DisplayCopyright holder and year(s)
Cardinality0..1
Typestring
Must Supporttrue
Requirements

Defines the content expected to be rendered in all representations of the artifact.

Comments

The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.approvalDate
Element IdActivityDefinition.approvalDate
Definition

The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.

Short DisplayWhen the activity definition was approved by publisher
Cardinality0..1
Typedate
Must Supporttrue
Comments

The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.lastReviewDate
Element IdActivityDefinition.lastReviewDate
Definition

The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date.

Short DisplayWhen the activity definition was last reviewed by the publisher
Cardinality0..1
Typedate
Must Supporttrue
Requirements

Gives a sense of how "current" the content is. Resources that have not been reviewed in a long time may have a risk of being less appropriate/relevant.

Comments

If specified, this date follows the original approval date.

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.effectivePeriod
Element IdActivityDefinition.effectivePeriod
Definition

The period during which the activity definition content was or is planned to be in active use.

Short DisplayWhen the activity definition is expected to be used
Cardinality0..1
TypePeriod
Must Supporttrue
Requirements

Allows establishing a transition before a resource comes into effect and also allows for a sunsetting process when new versions of the activity definition are or are expected to be used instead.

Comments

The effective period for an activity definition determines when the content is applicable for usage and is independent of publication and review dates. For example, a activity intended to be used for the year 2016 might be published in 2015.

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.topic
Element IdActivityDefinition.topic
Definition

Descriptive topics related to the content of the activity. Topics provide a high-level categorization of the activity that can be useful for filtering and searching.

Short DisplayE.g. Education, Treatment, Assessment, etc
Cardinality0..*
Terminology BindingHigh-level categorization of the definition, used for searching, sorting, and filtering.
For example codes, see Definition Topic
TypeCodeableConcept
Must Supporttrue
Requirements

Repositories must be able to determine how to categorize the activity definition so that it can be found by topical searches.

Comments

DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'topic' code in the useContext element. (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableConcept indicating the topic)

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.author
Element IdActivityDefinition.author
Definition

An individiual or organization primarily involved in the creation and maintenance of the content.

Short DisplayWho authored the content
Cardinality0..*
TypeContactDetail
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.editor
Element IdActivityDefinition.editor
Definition

An individual or organization primarily responsible for internal coherence of the content.

Short DisplayWho edited the content
Cardinality0..*
TypeContactDetail
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.reviewer
Element IdActivityDefinition.reviewer
Definition

An individual or organization asserted by the publisher to be primarily responsible for review of some aspect of the content.

Short DisplayWho reviewed the content
Cardinality0..*
TypeContactDetail
Must Supporttrue
Comments

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.endorser
Element IdActivityDefinition.endorser
Definition

An individual or organization asserted by the publisher to be responsible for officially endorsing the content for use in some setting.

Short DisplayWho endorsed the content
Cardinality0..*
TypeContactDetail
Must Supporttrue
Comments

See guidance around (not) making local changes to elements here.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact
Element IdActivityDefinition.relatedArtifact
Definition

Related artifacts such as additional documentation, justification, or bibliographic references.

Short DisplayAdditional documentation, citations, etc
Cardinality0..*
TypeRelatedArtifact
Must Supporttrue
Requirements

Activity definitions must be able to provide enough information for consumers of the content (and/or interventions or results produced by the content) to be able to determine and understand the justification for and evidence in support of the content.

Comments

Each related artifact is either an attachment, or a reference to another resource, but not both.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.id
Element IdActivityDefinition.relatedArtifact.id
Definition

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

Short DisplayUnique id for inter-element referencing
Cardinality0..1 This element is affected by the following invariants: ele-1
Typeid
ActivityDefinition.relatedArtifact.extension
Element IdActivityDefinition.relatedArtifact.extension
Definition

May 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 managable, 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.

Short DisplayAdditional content defined by implementations
Cardinality0..*
TypeExtension
Alternate Namesextensions, 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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
SlicingThis element introduces a set of slices. The slicing rules are:
  • unordered
  • Open
  • discriminators: value:url
ActivityDefinition.relatedArtifact.type
Element IdActivityDefinition.relatedArtifact.type
Definition

The type of relationship to the related artifact.

Short Displaydocumentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of | part-of | amends | amended-with | appends | appended-with | cites | cited-by | comments-on | comment-in | contains | contained-in | corrects | correction-in | replaces | replaced-with | retracts | retracted-by | signs | similar-to | supports | supported-with | transforms | transformed-into | transformed-with | documents | specification-of | created-with | cite-as
Cardinality1..1
Terminology BindingThe type of relationship to the related artifact.
The codes SHALL be taken from RelatedArtifactType
Typecode
Comments

The presence of both sides of a relationship type (e.g. successor and predecessor) is required to support use cases where one side of a relationship is not represented in FHIR. However, this feature SHALL NOT be used to create bi-directional resource links in FHIR instances. Specifically, following the methodology of "new points to old" and "many points to one", when using related artifact elements to describe and reference FHIR resources, the type element SHALL be drawn from the fhir-related-artifact-type ValueSet.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.classifier
Element IdActivityDefinition.relatedArtifact.classifier
Definition

Provides additional classifiers of the related artifact.

Short DisplayAdditional classifiers
Cardinality0..*
Terminology BindingAdditional classifiers for the related artifact.
For example codes, see Citation Artifact Classifier
TypeCodeableConcept
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.label
Element IdActivityDefinition.relatedArtifact.label
Definition

A short label that can be used to reference the citation from elsewhere in the containing artifact, such as a footnote index.

Short DisplayShort label
Cardinality0..1
Typestring
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.display
Element IdActivityDefinition.relatedArtifact.display
Definition

A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.

Short DisplayBrief description of the related artifact
Cardinality0..1
Typestring
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.citation
Element IdActivityDefinition.relatedArtifact.citation
Definition

A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format.

Short DisplayBibliographic citation for the artifact
Cardinality0..1
Typemarkdown
Comments

Additional structured information about citations should be captured as extensions.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.document
Element IdActivityDefinition.relatedArtifact.document
Definition

The document being referenced, represented as an attachment. This is exclusive with the resource element.

Short DisplayWhat document is being referenced
Cardinality0..1
TypeAttachment
Must Supporttrue
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.resource
Element IdActivityDefinition.relatedArtifact.resource
Definition

The related artifact, such as a library, value set, profile, or other knowledge resource.

Short DisplayWhat artifact is being referenced
Cardinality0..1
Typecanonical(Resource)
Must Supporttrue
Comments

If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.resourceReference
Element IdActivityDefinition.relatedArtifact.resourceReference
Definition

The related artifact, if the artifact is not a canonical resource, or a resource reference to a canonical resource.

Short DisplayWhat artifact, if not a conformance resource
Cardinality0..1
TypeReference(Resource)
Must Supporttrue
Comments

If both resource and resourceReference are present, they SHOULD be consistent and reference the same resource. Although relatedArtifact is intended to support references to definitional resources, there are cases where non-definitional resources can be definitional (such as Location where the kind is mode). Related artifacts SHOULD be used to reference definitional resources, and profiles SHOULD be used to make that explicit for particular use cases.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.publicationStatus
Element IdActivityDefinition.relatedArtifact.publicationStatus
Definition

The publication status of the artifact being referred to.

Short Displaydraft | active | retired | unknown
Cardinality0..1
Terminology BindingPublication status of an artifact being referred to.
The codes SHALL be taken from PublicationStatus
Typecode
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.relatedArtifact.publicationDate
Element IdActivityDefinition.relatedArtifact.publicationDate
Definition

The date of publication of the artifact being referred to.

Short DisplayDate of publication of the artifact being referred to
Cardinality0..1
Typedate
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.library
Element IdActivityDefinition.library
Definition

A reference to a Library resource containing any formal logic used by the activity definition.

Short DisplayLogic used by the activity definition
Cardinality0..*
Typecanonical(Library)
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.kind
Element IdActivityDefinition.kind
Definition

A description of the kind of resource the activity definition is representing. For example, a MedicationRequest, a ServiceRequest, or a CommunicationRequest.

Short DisplayKind of resource
Cardinality0..1
Terminology BindingThe kind of activity the definition is describing.
The codes SHALL be taken from Request Resource Types
Typecode
Comments

The kind element may only specify Request resource types to facilitate considering user input as part of processing the result of any automated clinical reasoning processes. To support creation of event resources, such as Observations, RiskAssessments, and DetectedIssues, use a Task resource with the focus of the task set to the event resource to be created. Note that the kind of resource to be created may determine what types of extensions are permitted.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.profile
Element IdActivityDefinition.profile
Definition

A profile to which the target of the activity definition is expected to conform.

Short DisplayWhat profile the resource needs to conform to
Cardinality0..1
Typecanonical(StructureDefinition)
Requirements

Allows profiles to be used to describe the types of activities that can be performed within a workflow, protocol, or order set.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.code
Element IdActivityDefinition.code
Definition

Detailed description of the type of activity; e.g. What lab test, what procedure, what kind of encounter.

Short DisplayDetail type of activity
Cardinality0..1
Terminology BindingDetailed type of the activity; e.g. CBC.
For example codes, see Procedure Codes (SNOMED CT)
TypeCodeableConcept
Requirements

Allows matching performed to planned as well as validation against protocols.

Comments

Tends to be less relevant for activities involving particular products.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.intent
Element IdActivityDefinition.intent
Definition

Indicates the level of authority/intentionality associated with the activity and where the request should fit into the workflow chain.

Short Displayproposal | plan | directive | order | original-order | reflex-order | filler-order | instance-order | option
Cardinality0..1
Terminology BindingCodes indicating the degree of authority/intentionality associated with a request.
The codes SHALL be taken from RequestIntent
Typecode
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.priority
Element IdActivityDefinition.priority
Definition

Indicates how quickly the activity should be addressed with respect to other requests.

Short Displayroutine | urgent | asap | stat
Cardinality0..1
Terminology BindingIdentifies the level of importance to be assigned to actioning the request.
The codes SHALL be taken from RequestPriority
Typecode
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.doNotPerform
Element IdActivityDefinition.doNotPerform
Definition

Set this to true if the definition is to indicate that a particular activity should NOT be performed. If true, this element should be interpreted to reinforce a negative coding. For example NPO as a code with a doNotPerform of true would still indicate to NOT perform the action.

Short DisplayTrue if the activity should not be performed
Cardinality0..1
Typeboolean
Is Modifiertrue (Reason: If true this element negates the specified action. For Example, instead of a request for a procedure, it is a request for the procedure to not occur.)
Comments

This element is not intended to be used to communicate a decision support response to cancel an order in progress. That should be done with the "remove" type of a PlanDefinition or RequestOrchestration.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.timing[x]
Element IdActivityDefinition.timing[x]
Definition

The timing or frequency upon which the described activity is to occur.

Short DisplayWhen activity is to occur
Cardinality0..1
TypeChoice of: Timing, Age, Range, Duration
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Requirements

Allows prompting for activities and detection of missed planned activities.

Comments

The intent of the timing element is to provide timing when the action should be performed. As a definitional resource, this timing is interpreted as part of an apply operation so that the timing of the result actions in a CarePlan or RequestOrchestration, for example, would be specified by evaluating the timing definition in the context of the apply and setting the resulting timing on the appropriate elements of the target resource. If the timing is an Age, the activity is expected to be performed when the subject is the given Age. When the timing is a Duration, the activity is expected to be performed within the specified duration from the apply. When the timing is a Range, it may be a range of Ages or Durations, providing a range for the expected timing of the resulting activity. When the timing is a Timing, it is establishing a schedule for the timing of the resulting activity.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.asNeeded[x]
Element IdActivityDefinition.asNeeded[x]
Definition

If a CodeableConcept is present, it indicates the pre-condition for performing the service. For example "pain", "on flare-up", etc.

Short DisplayPreconditions for service
Cardinality0..1
Terminology BindingA coded concept identifying the pre-condition that should hold prior to performing a procedure. For example "pain", "on flare-up", etc.
For example codes, see SNOMED CT Medication As Needed Reason Codes
TypeChoice of: boolean, CodeableConcept
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.location
Element IdActivityDefinition.location
Definition

Identifies the facility where the activity will occur; e.g. home, hospital, specific clinic, etc.

Short DisplayWhere it should happen
Cardinality0..1
TypeCodeableReference(Location)
Requirements

Helps in planning of activity.

Alternate Namesfacility
Comments

May reference a specific clinical location or may just identify a type of location.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.participant
Element IdActivityDefinition.participant
Definition

Indicates who should participate in performing the action described.

Short DisplayWho should participate in the action
Cardinality0..*
TypeBackboneElement
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.participant.id
Element IdActivityDefinition.participant.id
Definition

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

Short DisplayUnique id for inter-element referencing
Cardinality0..1 This element is affected by the following invariants: ele-1
Typestring
ActivityDefinition.participant.extension
Element IdActivityDefinition.participant.extension
Definition

May 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 managable, 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.

Short DisplayAdditional content defined by implementations
Cardinality0..*
TypeExtension
Alternate Namesextensions, 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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.participant.modifierExtension
Element IdActivityDefinition.participant.modifierExtension
Definition

May 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 managable, 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).

Short DisplayExtensions that cannot be ignored even if unrecognized
Cardinality0..*
TypeExtension
Is Modifiertrue (Reason: Modifier extensions are expected to modify the meaning or interpretation of the element that contains them)
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.

Alternate Namesextensions, user content, modifiers
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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.participant.type
Element IdActivityDefinition.participant.type
Definition

The type of participant in the action.

Short Displaycareteam | device | group | healthcareservice | location | organization | patient | practitioner | practitionerrole | relatedperson
Cardinality0..1
Terminology BindingThe type of participant in the activity.
The codes SHALL be taken from Action Participant Type
Typecode
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.participant.typeCanonical
Element IdActivityDefinition.participant.typeCanonical
Definition

The type of participant in the action.

Short DisplayWho or what can participate
Cardinality0..1
Typecanonical(CapabilityStatement)
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.participant.typeReference
Element IdActivityDefinition.participant.typeReference
Definition

The type of participant in the action.

Short DisplayWho or what can participate
Cardinality0..1
TypeReference(CareTeam)
Comments

When this element is a reference, it SHOULD be a reference to a definitional resource (for example, a location type, rather than a specific location).

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.participant.role
Element IdActivityDefinition.participant.role
Definition

The role the participant should play in performing the described action.

Short DisplayE.g. Nurse, Surgeon, Parent, etc
Cardinality0..1
Terminology BindingDefines roles played by participants for the action.
For example codes, see Action Participant Role icon
TypeCodeableConcept
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.participant.function
Element IdActivityDefinition.participant.function
Definition

Indicates how the actor will be involved in the action - author, reviewer, witness, etc.

Short DisplayE.g. Author, Reviewer, Witness, etc
Cardinality0..1
Terminology Bindingnull
For example codes, see Action Participant Function
TypeCodeableConcept
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.product[x]
Element IdActivityDefinition.product[x]
Definition

Identifies the food, drug or other product being consumed or supplied in the activity.

Short DisplayWhat's administered/supplied
Cardinality0..1
Terminology BindingCode describing the type of substance or medication.
For example codes, see SNOMED CT Medication Codes
TypeChoice of: Reference(Medication), CodeableConcept
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.quantity
Element IdActivityDefinition.quantity
Definition

Identifies the quantity expected to be consumed at once (per dose, per meal, etc.).

Short DisplayHow much is administered/consumed/supplied
Cardinality0..1
TypeQuantity(SimpleQuantity)
Alternate Namesdose
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.dosage
Element IdActivityDefinition.dosage
Definition

Provides detailed dosage instructions in the same way that they are described for MedicationRequest resources.

Short DisplayDetailed dosage instructions
Cardinality0..*
TypeDosage
Comments

If a dosage instruction is used, the definition should not specify timing or quantity.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.bodySite
Element IdActivityDefinition.bodySite
Definition

Indicates the sites on the subject's body where the procedure should be performed (I.e. the target sites).

Short DisplayWhat part of body to perform on
Cardinality0..*
Terminology BindingA code that identifies the anatomical location.
For example codes, see SNOMED CT Body Structures
TypeCodeableConcept
Requirements

Knowing where the procedure is made is important for tracking if multiple sites are possible.

Comments

Only used if not implicit in the code found in ServiceRequest.type.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.specimenRequirement
Element IdActivityDefinition.specimenRequirement
Definition

Defines specimen requirements for the action to be performed, such as required specimens for a lab test.

Short DisplayWhat specimens are required to perform this action
Cardinality0..*
Typecanonical(SpecimenDefinition)
Requirements

Needed to represent lab order definitions.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.observationRequirement
Element IdActivityDefinition.observationRequirement
Definition

Defines observation requirements for the action to be performed, such as body weight or surface area.

Short DisplayWhat observations are required to perform this action
Cardinality0..*
Typecanonical(ObservationDefinition)
Requirements

Needed to represent observation definitions.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.observationResultRequirement
Element IdActivityDefinition.observationResultRequirement
Definition

Defines the observations that are expected to be produced by the action.

Short DisplayWhat observations must be produced by this action
Cardinality0..*
Typecanonical(ObservationDefinition)
Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.transform
Element IdActivityDefinition.transform
Definition

A reference to a StructureMap resource that defines a transform that can be executed to produce the intent resource using the ActivityDefinition instance as the input.

Short DisplayTransform to apply the template
Cardinality0..1
Typecanonical(StructureMap)
Comments

Note that if both a transform and dynamic values are specified, the dynamic values will be applied to the result of the transform.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.dynamicValue
Element IdActivityDefinition.dynamicValue
Definition

Dynamic values that will be evaluated to produce values for elements of the resulting resource. For example, if the dosage of a medication must be computed based on the patient's weight, a dynamic value would be used to specify an expression that calculated the weight, and the path on the request resource that would contain the result.

Short DisplayDynamic aspects of the definition
Cardinality0..*
TypeBackboneElement
Comments

Dynamic values are applied in the order in which they are defined in the ActivityDefinition. Note that if both a transform and dynamic values are specified, the dynamic values will be applied to the result of the transform.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.dynamicValue.id
Element IdActivityDefinition.dynamicValue.id
Definition

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

Short DisplayUnique id for inter-element referencing
Cardinality0..1 This element is affected by the following invariants: ele-1
Typestring
ActivityDefinition.dynamicValue.extension
Element IdActivityDefinition.dynamicValue.extension
Definition

May 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 managable, 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.

Short DisplayAdditional content defined by implementations
Cardinality0..*
TypeExtension
Alternate Namesextensions, 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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.dynamicValue.modifierExtension
Element IdActivityDefinition.dynamicValue.modifierExtension
Definition

May 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 managable, 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).

Short DisplayExtensions that cannot be ignored even if unrecognized
Cardinality0..*
TypeExtension
Is Modifiertrue (Reason: Modifier extensions are expected to modify the meaning or interpretation of the element that contains them)
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.

Alternate Namesextensions, user content, modifiers
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
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ext-1RuleMust have either extensions or value[x], not bothextension.exists() != value.exists()
ActivityDefinition.dynamicValue.path
Element IdActivityDefinition.dynamicValue.path
Definition

The path to the element to be customized. This is the path on the resource that will hold the result of the calculation defined by the expression. The specified path SHALL be a FHIRPath resolvable on the specified target type of the ActivityDefinition, and SHALL consist only of identifiers, constant indexers, and a restricted subset of functions. The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the Simple FHIRPath Profile for full details).

Short DisplayThe path to the element to be set dynamically
Cardinality1..1
Typestring
Comments

The path attribute contains a Simple FHIRPath Subset that allows path traversal, but not calculation.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())
ActivityDefinition.dynamicValue.expression
Element IdActivityDefinition.dynamicValue.expression
Definition

An expression specifying the value of the customized element.

Short DisplayAn expression that provides the dynamic value for the customization
Cardinality1..1
TypeExpression
Comments

The expression may be inlined, or may be a reference to a named expression within a logic library referenced by the library element.

Invariants
Inherited by this element
ele-1RuleAll FHIR elements must have a @value or childrenhasValue() or (children().count() > id.count())