This page is part of the FHIR Specification (v4.4.0: R5 Preview #2). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions

?.? Subscriptions

FHIR Infrastructure Work Group

Maturity Level: 0

Standards Status: Draft

Subscriptions are used to establish proactive event notifications from a FHIR application to another system. Applications which have implemented support for Subscriptions will advertise their use via the resources Subscription and SubscriptionTopic. Operations allowed on these resources may be discovered via the FHIR Application's CapabilityStatement.

The Subscription mechanism is composed of three parts:

• Definitions of events via SubscriptionTopic
• A Subscription to provide filters, format, and channel details
• Notifications via subscription-notification Bundles