HL7中国发布订阅框架实施指南
2025.03.10 - release

HL7中国发布订阅框架实施指南 - Local Development build (v2025.03.10) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

Resource Profile: NotifySubscriptionStatus - Detailed Descriptions

Draft as of 2025-03-10

Definitions for the profile-base-notify-subscriptionstatus resource profile.

Guidance on how to interpret the contents of this table can be found here

0. SubscriptionStatus
Definition

The SubscriptionStatus resource describes the state of a Subscription during notifications.

ShortStatus information about a Subscription provided during event notification
Control0..*
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
sst-1: Event notifications must contain events ((type = 'event-notification' or type = 'query-event') implies notificationEvent.exists())
sst-2: Status messages must contain status (type = 'query-status' implies status.exists())
2. SubscriptionStatus.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.

ShortA set of rules under which this content was created
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.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. SubscriptionStatus.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.

ShortContained, inline 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.

Control0..*
This element is affected by the following invariants: dom-2, dom-4, dom-3, dom-5
TypeResource
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
6. SubscriptionStatus.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).

ShortExtensions that cannot be ignored
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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Must Supportfalse
Summarytrue
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
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
8. SubscriptionStatus.status
Definition

The status of the subscription, which marks the server state for managing the subscription.

Short订阅的状态: requested | active | error | off | entered-in-errorrequested | active | error | off | entered-in-error
Control10..1
This element is affected by the following invariants: sst-2
BindingThe codes SHALL be taken from SubscriptionStatusCodeshttp://hl7.org/fhir/ValueSet/subscription-status|5.0.0
(required to http://hl7.org/fhir/ValueSet/subscription-status|5.0.0)

The status of a subscription at the time this notification was generated.

Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. SubscriptionStatus.type
Definition

The type of event being conveyed with this notification.

Short通知的类型: handshake | heartbeat | event-notificationhandshake | heartbeat | event-notification | query-status | query-event
Control1..1
This element is affected by the following invariants: sst-1, sst-2
BindingThe codes SHALL be taken from SubscriptionNotificationTypehttp://hl7.org/fhir/ValueSet/subscription-notification-type|5.0.0
(required to http://hl7.org/fhir/ValueSet/subscription-notification-type|5.0.0)

The type of notification represented by the status message.

Typecode
Is Modifiertrue because Not known why this is labelled a modifier
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. SubscriptionStatus.eventsSinceSubscriptionStart
Definition

The total number of actual events which have been generated since the Subscription was created (inclusive of this notification) - regardless of how many have been successfully communicated. This number is NOT incremented for handshake and heartbeat notifications.

Short自订阅创建后的事件数量Events since the Subscription was created
Control10..1
Typeinteger64
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
14. SubscriptionStatus.notificationEvent
Definition

Detailed information about events relevant to this subscription notification.

Short通知事件的详细信息Detailed information about any events relevant to this notification
Control0..*
This element is affected by the following invariants: sst-1
TypeBackboneElement
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. SubscriptionStatus.notificationEvent.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).

ShortExtensions that cannot be ignored even if unrecognized
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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
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
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
18. SubscriptionStatus.notificationEvent.eventNumber
Definition

Either the sequential number of this event in this subscription context or a relative event number for this notification.

Short事件序号Sequencing index of this event
Comments

In subscriptions where delivery of notifications IS NOT guaranteed (e.g., REST-Hook), this number is a unique and monotonically-increasing event number for a subscription. In channels where delivery of notifications IS guaranteed, this number is a relative index for the events present in the notification (e.g., 1, 2, etc.).

Control1..1
Typeinteger64
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. SubscriptionStatus.notificationEvent.timestamp
Definition

The actual time this event occurred on the server.

Short事件发生的时间戳The instant this event occurred
Control10..1
Typeinstant
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. SubscriptionStatus.notificationEvent.focus
Definition

The focus of this event. While this will usually be a reference to the focus resource of the event, it MAY contain a reference to a non-FHIR object.

Short事件关注资源Reference to the primary resource or information of this event
Control10..1
TypeReference(Resource)
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. SubscriptionStatus.notificationEvent.additionalContext
Definition

Additional context information for this event. Generally, this will contain references to additional resources included with the event (e.g., the Patient relevant to an Encounter), however it MAY refer to non-FHIR objects.

Short事件关注资源的相关资源References related to the focus resource and/or context of this event
Control0..*
TypeReference(Resource)
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. SubscriptionStatus.subscription
Definition

The reference to the Subscription which generated this notification.

Short指向订阅的引用Reference to the Subscription responsible for this notification
Control1..1
TypeReference(Subscription)
Is Modifierfalse
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. SubscriptionStatus.topic
Definition

The reference to the SubscriptionTopic for the Subscription which generated this notification.

Short指向订阅主题的引用Reference to the SubscriptionTopic this notification relates to
Comments

This value SHOULD NOT be present when using empty payloads, MAY be present when using id-only payloads, and SHOULD be present when using full-resource payloads.

Control10..1
Typecanonical(SubscriptionTopic)
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. SubscriptionStatus.error
Definition

A record of errors that occurred when the server processed a notification.

Short该订阅的错误列表List of errors on the subscription
Comments

Recommended practice: clear errors when status is updated.

Control0..*
BindingFor example codes, see SubscriptionErrorCodeshttp://hl7.org/fhir/ValueSet/subscription-error
(example to http://hl7.org/fhir/ValueSet/subscription-error)

Codes to represent subscription error details.

TypeCodeableConcept
Is Modifierfalse
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be found here

0. SubscriptionStatus
2. SubscriptionStatus.status
Short订阅的状态: requested | active | error | off | entered-in-error
Control1..?
4. SubscriptionStatus.type
Short通知的类型: handshake | heartbeat | event-notification
6. SubscriptionStatus.eventsSinceSubscriptionStart
Short自订阅创建后的事件数量
Control1..?
8. SubscriptionStatus.notificationEvent
Short通知事件的详细信息
10. SubscriptionStatus.notificationEvent.eventNumber
Short事件序号
12. SubscriptionStatus.notificationEvent.timestamp
Short事件发生的时间戳
Control1..?
14. SubscriptionStatus.notificationEvent.focus
Short事件关注资源
Control1..?
16. SubscriptionStatus.notificationEvent.additionalContext
Short事件关注资源的相关资源
18. SubscriptionStatus.subscription
Short指向订阅的引用
20. SubscriptionStatus.topic
Short指向订阅主题的引用
Control1..?
22. SubscriptionStatus.error
Short该订阅的错误列表

Guidance on how to interpret the contents of this table can be found here

0. SubscriptionStatus
Definition

The SubscriptionStatus resource describes the state of a Subscription during notifications.

ShortStatus information about a Subscription provided during event notification
Control0..*
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
sst-1: Event notifications must contain events ((type = 'event-notification' or type = 'query-event') implies notificationEvent.exists())
sst-2: Status messages must contain status (type = 'query-status' implies status.exists())
2. SubscriptionStatus.id
Definition

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

ShortLogical id of this artifact
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.

Control0..1
Typeid
Is Modifierfalse
Must Supportfalse
Summarytrue
4. SubscriptionStatus.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.

ShortMetadata about the resource
Control0..1
TypeMeta
Is Modifierfalse
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. SubscriptionStatus.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.

ShortA set of rules under which this content was created
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.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. SubscriptionStatus.language
Definition

The base language in which the resource is written.

ShortLanguage of the resource content
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).

Control0..1
BindingThe codes SHALL be taken from AllLanguages
(required to http://hl7.org/fhir/ValueSet/all-languages|5.0.0)

IETF language tag for a human language

Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. SubscriptionStatus.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.

ShortText summary of the resource, for human interpretation
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.

Control0..1
This element is affected by the following invariants: dom-6
TypeNarrative
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesnarrative, html, xhtml, display
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. SubscriptionStatus.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.

ShortContained, inline 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.

Control0..*
This element is affected by the following invariants: dom-2, dom-4, dom-3, dom-5
TypeResource
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
14. SubscriptionStatus.extension
Definition

May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and 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.

ShortAdditional content defined by implementations
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.

Control0..*
TypeExtension
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
16. SubscriptionStatus.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).

ShortExtensions that cannot be ignored
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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Must Supportfalse
Summarytrue
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
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
18. SubscriptionStatus.status
Definition

The status of the subscription, which marks the server state for managing the subscription.

Short订阅的状态: requested | active | error | off | entered-in-error
Control1..1
This element is affected by the following invariants: sst-2
BindingThe codes SHALL be taken from SubscriptionStatusCodes
(required to http://hl7.org/fhir/ValueSet/subscription-status|5.0.0)

The status of a subscription at the time this notification was generated.

Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. SubscriptionStatus.type
Definition

The type of event being conveyed with this notification.

Short通知的类型: handshake | heartbeat | event-notification
Control1..1
This element is affected by the following invariants: sst-1, sst-2
BindingThe codes SHALL be taken from SubscriptionNotificationType
(required to http://hl7.org/fhir/ValueSet/subscription-notification-type|5.0.0)

The type of notification represented by the status message.

Typecode
Is Modifiertrue because Not known why this is labelled a modifier
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. SubscriptionStatus.eventsSinceSubscriptionStart
Definition

The total number of actual events which have been generated since the Subscription was created (inclusive of this notification) - regardless of how many have been successfully communicated. This number is NOT incremented for handshake and heartbeat notifications.

Short自订阅创建后的事件数量
Control1..1
Typeinteger64
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. SubscriptionStatus.notificationEvent
Definition

Detailed information about events relevant to this subscription notification.

Short通知事件的详细信息
Control0..*
This element is affected by the following invariants: sst-1
TypeBackboneElement
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. SubscriptionStatus.notificationEvent.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
This element is affected by the following invariants: ele-1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
28. SubscriptionStatus.notificationEvent.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.

ShortAdditional content defined by implementations
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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
30. SubscriptionStatus.notificationEvent.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).

ShortExtensions that cannot be ignored even if unrecognized
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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
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
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
32. SubscriptionStatus.notificationEvent.eventNumber
Definition

Either the sequential number of this event in this subscription context or a relative event number for this notification.

Short事件序号
Comments

In subscriptions where delivery of notifications IS NOT guaranteed (e.g., REST-Hook), this number is a unique and monotonically-increasing event number for a subscription. In channels where delivery of notifications IS guaranteed, this number is a relative index for the events present in the notification (e.g., 1, 2, etc.).

Control1..1
Typeinteger64
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. SubscriptionStatus.notificationEvent.timestamp
Definition

The actual time this event occurred on the server.

Short事件发生的时间戳
Control1..1
Typeinstant
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. SubscriptionStatus.notificationEvent.focus
Definition

The focus of this event. While this will usually be a reference to the focus resource of the event, it MAY contain a reference to a non-FHIR object.

Short事件关注资源
Control1..1
TypeReference(Resource)
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. SubscriptionStatus.notificationEvent.additionalContext
Definition

Additional context information for this event. Generally, this will contain references to additional resources included with the event (e.g., the Patient relevant to an Encounter), however it MAY refer to non-FHIR objects.

Short事件关注资源的相关资源
Control0..*
TypeReference(Resource)
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. SubscriptionStatus.subscription
Definition

The reference to the Subscription which generated this notification.

Short指向订阅的引用
Control1..1
TypeReference(Subscription)
Is Modifierfalse
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
42. SubscriptionStatus.topic
Definition

The reference to the SubscriptionTopic for the Subscription which generated this notification.

Short指向订阅主题的引用
Comments

This value SHOULD NOT be present when using empty payloads, MAY be present when using id-only payloads, and SHOULD be present when using full-resource payloads.

Control1..1
Typecanonical(SubscriptionTopic)
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. SubscriptionStatus.error
Definition

A record of errors that occurred when the server processed a notification.

Short该订阅的错误列表
Comments

Recommended practice: clear errors when status is updated.

Control0..*
BindingFor example codes, see SubscriptionErrorCodes
(example to http://hl7.org/fhir/ValueSet/subscription-error)

Codes to represent subscription error details.

TypeCodeableConcept
Is Modifierfalse
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))