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Events message structures

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In this article, learn about the events message structures, required and nonrequired elements, and see samples of events message payloads.

Important

Events currently supports these operations:

  • FhirResourceCreated - The event emitted after a FHIR resource gets created successfully.

  • FhirResourceUpdated - The event emitted after a FHIR resource gets updated successfully.

  • FhirResourceDeleted - The event emitted after a FHIR resource gets soft deleted successfully.

  • DicomImageCreated - The event emitted after a DICOM image gets created successfully.

  • DicomImageDeleted - The event emitted after a DICOM image gets deleted successfully.

  • DicomImageUpdated - The event emitted after a DICOM image gets updated successfully.

For more information about the FHIR service delete types, see REST API capabilities in the FHIR service in Azure Health Data Services

FHIR events message structure

Name Type Required Description
topic string Yes The topic is the Azure Resource ID of your Azure Health Data Services workspace.
subject string Yes The Uniform Resource Identifier (URI) of the FHIR resource that was changed. Customer can access the resource with the subject with https:// scheme. Customer should use the dataVersion or data.resourceVersionId to visit specific data version regarding this event.
eventType string(enum) Yes The type of change on the FHIR resource.
eventTime string(datetime) Yes The UTC time when the FHIR resource change committed.
id string Yes Unique identifier for the event.
data object Yes FHIR resource change event details.
data.resourceType string(enum) Yes The FHIR Resource Type.
data.resourceFhirAccount string Yes The service name of FHIR account in the Azure Health Data Services workspace.
data.resourceFhirId string Yes The resource ID of the FHIR account. The FHIR service randomly generates the ID when a customer creates the resource. The customer can also use customized ID in FHIR resource creation; however the ID should not include or infer any PHI/PII information. It should be a system metadata, not specific to any personal data content.
data.resourceVersionId string(number) Yes The data version of the FHIR resource.
dataVersion string No Same as data.resourceVersionId.
metadataVersion string No The schema version of the event metadata. This is defined by Azure Event Grid and should be constant most of the time.

FHIR events message samples

FhirResourceCreated event

{
  "id": "e4c7f556-d72c-e7f7-1069-1e82ac76ab41",
  "topic": "/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/Microsoft.HealthcareApis/workspaces/{workspace-name}",
  "subject": "{fhir-account}.fhir.azurehealthcareapis.com/Patient/e0a1f743-1a70-451f-830e-e96477163902",
  "data": {
    "resourceType": "Patient",
    "resourceFhirAccount": "{fhir-account}.fhir.azurehealthcareapis.com",
    "resourceFhirId": "e0a1f743-1a70-451f-830e-e96477163902",
    "resourceVersionId": 1
  },
  "eventType": "Microsoft.HealthcareApis.FhirResourceCreated",
  "dataVersion": "1",
  "metadataVersion": "1",
  "eventTime": "2021-09-08T01:14:04.5613214Z"
}

FhirResourceUpdated event

{
  "id": "634bd421-8467-f23c-b8cb-f6a31e41c32a",
  "topic": "/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/Microsoft.HealthcareApis/workspaces/{workspace-name}",
  "subject": "{fhir-account}.fhir.azurehealthcareapis.com/Patient/e0a1f743-1a70-451f-830e-e96477163902",
  "data": {
    "resourceType": "Patient",
    "resourceFhirAccount": "{fhir-account}.fhir.azurehealthcareapis.com",
    "resourceFhirId": "e0a1f743-1a70-451f-830e-e96477163902",
    "resourceVersionId": 2
  },
  "eventType": "Microsoft.HealthcareApis.FhirResourceUpdated",
  "dataVersion": "2",
  "metadataVersion": "1",
  "eventTime": "2021-09-08T01:29:12.0618739Z"
}

FhirResourceDeleted event

{
  "id": "ef289b93-3159-b833-3a44-dc6b86ed1a8a",
  "topic": "/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/Microsoft.HealthcareApis/workspaces/{workspace-name}",
  "subject": "{fhir-account}.fhir.azurehealthcareapis.com/Patient/e0a1f743-1a70-451f-830e-e96477163902",
  "data": {
    "resourceType": "Patient",
    "resourceFhirAccount": "{fhir-account}.fhir.azurehealthcareapis.com",
    "resourceFhirId": "e0a1f743-1a70-451f-830e-e96477163902",
    "resourceVersionId": 3
  },
  "eventType": "Microsoft.HealthcareApis.FhirResourceDeleted",
  "dataVersion": "3",
  "metadataVersion": "1",
  "eventTime": "2021-09-08T01:31:58.5175837Z"
}

DICOM events message structure

Name Type Required Description
topic string Yes The topic is the Azure Resource ID of your Azure Health Data Services workspace.
subject string Yes The Uniform Resource Identifier (URI) of the DICOM image that was changed. Customer can access the image with the subject with https:// scheme. Customer should use the dataVersion or data.resourceVersionId to visit specific data version regarding this event.
eventType string(enum) Yes The type of change on the DICOM image.
eventTime string(datetime) Yes The UTC time when the DICOM image change was committed.
id string Yes Unique identifier for the event.
data object Yes DICOM image change event details.
data.partitionName string No Data partition name.
data.imageStudyInstanceUid string Yes The image's Study Instance UID.
data.imageSeriesInstanceUid string Yes The image's Series Instance UID.
data.imageSopInstanceUid string Yes The image's SOP Instance UID.
data.serviceHostName string Yes The hostname of the DICOM service where the change occurred.
data.sequenceNumber int Yes The sequence number of the change in the DICOM service. Every image creation and deletion have a unique sequence within the service. This number correlates to the sequence number of the DICOM service's Change Feed. Querying the DICOM Service Change Feed with this sequence number gives you the change that created this event.
dataVersion string No The data version of the DICOM image.
metadataVersion string No The schema version of the event metadata. This is defined by Azure Event Grid and should be constant most of the time.

DICOM events message samples

DicomImageCreated

{
  "id": "d621839d-958b-4142-a638-bb966b4f7dfd",
  "topic": "/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/Microsoft.HealthcareApis/workspaces/{workspace-name}",
  "subject": "{dicom-account}.dicom.azurehealthcareapis.com/v1/partitions/Microsoft.Default/studies/1.2.3.4.3/series/1.2.3.4.3.9423673/instances/1.3.6.1.4.1.45096.2.296485376.2210.1633373143.864442",
  "data": {
    "partitionName": "Microsoft.Default",
    "imageStudyInstanceUid": "1.2.3.4.3",
    "imageSeriesInstanceUid": "1.2.3.4.3.9423673",
    "imageSopInstanceUid": "1.3.6.1.4.1.45096.2.296485376.2210.1633373143.864442",
    "serviceHostName": "{dicom-account}.dicom.azurehealthcareapis.com",
    "sequenceNumber": 1
  },
  "eventType": "Microsoft.HealthcareApis.DicomImageCreated",
  "dataVersion": "1",
  "metadataVersion": "1",
  "eventTime": "2022-09-15T01:14:04.5613214Z"
}

DicomImageDeleted

{
  "id": "eac1c1a0-ffa8-4b28-97cc-1d8b9a0a6021",
  "topic": "/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/Microsoft.HealthcareApis/workspaces/{workspace-name}",
  "subject": "{dicom-account}.dicom.azurehealthcareapis.com/v1/partitions/Microsoft.Default/studies/1.2.3.4.3/series/1.2.3.4.3.9423673/instances/1.3.6.1.4.1.45096.2.296485376.2210.1633373143.864442",
  "data": {
    "partitionName": "Microsoft.Default",
    "imageStudyInstanceUid": "1.2.3.4.3",
    "imageSeriesInstanceUid": "1.2.3.4.3.9423673",
    "imageSopInstanceUid": "1.3.6.1.4.1.45096.2.296485376.2210.1633373143.864442",
    "serviceHostName": "{dicom-account}.dicom.azurehealthcareapis.com",
    "sequenceNumber": 2
  },
  "eventType": "Microsoft.HealthcareApis.DicomImageDeleted",
  "dataVersion": "1",
  "metadataVersion": "1",
  "eventTime": "2022-09-15T01:16:07.5692209Z"
}

DicomImageUpdated

{
  "id": "83cb0f51-af41-e58c-3c6c-46344b349bc5",
  "topic": "/subscriptions/{subscription-id}/resourceGroups/{resource-group-name}/providers/Microsoft.HealthcareApis/workspaces/{workspace-name}",
  "subject": "{dicom-account}.dicom.azurehealthcareapis.com/v1/partitions/Microsoft.Default/studies/1.2.3.4.3/series/1.2.3.4.3.9423673/instances/1.3.6.1.4.1.45096.2.296485376.2210.1633373143.864442",
  "data": {
    "partitionName": "Microsoft.Default",
    "imageStudyInstanceUid": "1.2.3.4.3",
    "imageSeriesInstanceUid": "1.2.3.4.3.9423673",
    "imageSopInstanceUid": "1.3.6.1.4.1.45096.2.296485376.2210.1633373143.864442",
    "serviceHostName": "{dicom-account}.dicom.azurehealthcareapis.com",
    "sequenceNumber": 2
  },
  "eventType": "Microsoft.HealthcareApis.DicomImageUpdated",
  "dataVersion": "1",
  "metadataVersion": "1",
  "eventTime": "2023-06-09T16:55:44.7197137Z"
}

Next steps

In this article, you learned about the events message structures.

To learn how to deploy events using the Azure portal, see

Deploy events using the Azure portal

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