Canonical URL of the ActivityDefinition when invoked at the resource type level. This is exclusive with the ActivityDefinition parameter.

Version of the ActivityDefinition when invoked at the resource type level. This is exclusive with the ActivityDefinition parameter.

The activity definition to apply. If the operation is invoked on an instance, this parameter is not allowed. If the operation is invoked at the type level, this parameter is required

The subject(s) that is/are the target of the activity definition to be applied. The subject may be a Patient, Practitioner, Organization, Location, Device, or Group. Subjects provided in this parameter will be resolved as the subject of the ActivityDefinition based on the type of the subject. If multiple subjects of the same type are provided, the behavior is implementation-defined

The encounter in context, if any

The practitioner in context

The organization in context

The type of user initiating the request, e.g. patient, healthcare provider, or specific type of healthcare provider (physician, nurse, etc.)

Preferred language of the person using the system

The task the system user is performing, e.g. laboratory results review, medication list review, etc. This information can be used to tailor decision support outputs, such as recommended information resources

The current setting of the request (inpatient, outpatient, etc.)

Additional detail about the setting of the request, if any

Any input parameters defined in libraries referenced by the ActivityDefinition. Parameter types are mapped to CQL as specified in the Using CQL section of this implementation guide. If a parameter appears more than once in the input Parameters resource, it is represented with a List in the input CQL. If a parameter has parts, it is represented as a Tuple in the input CQL.

Whether to use data from the server performing the evaluation. If this parameter is true (the default), then the operation will use data first from any bundles provided as parameters (through the data and prefetch parameters), second data from the server performing the operation, and third, data from the dataEndpoint parameter (if provided). If this parameter is false, the operation will use data first from the bundles provided in the data or prefetch parameters, and second from the dataEndpoint parameter (if provided).

Data to be made available to the ActivityDefinition evaluation. This parameter is exclusive with the prefetchData parameter (i.e. either provide all data as a single bundle, or provide data using multiple bundles with prefetch descriptions).

Data to be made available to the ActivityDefinition evaluation, organized as prefetch response bundles. Each prefetchData parameter specifies either the name of the prefetchKey it is satisfying, a DataRequirement describing the prefetch, or both.

The key of the prefetch item. This typically corresponds to the name of a parameter in a library, or the name of a prefetch item in a CDS Hooks discovery response

A DataRequirement describing the content of the prefetch item.

The prefetch data as a Bundle. If the prefetchData has no prefetchResult part, it indicates there is no data associated with this prefetch item.

An endpoint to use to access data referenced by retrieve operations in libraries referenced by the ActivityDefinition. If provided, this endpoint is used after the data or prefetchData bundles, and the server, if the useServerData parameter is true.

Configuration information to resolve canonical artifacts

Processing Semantics:

Create a canonical-like reference (e.g. {canonical.url}|{canonical.version} or similar extensions for non-canonical artifacts).

• Given a single artifactEndpointConfiguration
  • When artifactRoute is present
    • And artifactRoute starts with canonical or artifact reference
    • Then attempt to resolve with endpointUri or endpoint
  • When artifactRoute is not present
    • Then attempt to resolve with endpointUri or endpoint
• Given multiple artifactEndpointConfigurations
  • Then rank order each configuration (see below)
  • And attempt to resolve with endpointUri or endpoint in order until resolved

Rank each artifactEndpointConfiguration such that:

• if artifactRoute is present and artifactRoute starts with canonical or artifact reference: rank based on number of matching characters
• if artifactRoute is not present: include but rank lower

NOTE: For evenly ranked artifactEndpointConfigurations, order as defined in the OperationDefinition.

An optional route used to determine whether this endpoint is expected to be able to resolve artifacts that match the route (i.e. start with the route, up to and including the entire url)

The URI of the endpoint, exclusive with the endpoint parameter

An Endpoint resource describing the endpoint, exclusive with the endpointUri parameter

An endpoint to use to access terminology (i.e. valuesets, codesystems, and membership testing) referenced by the ActivityDefinition. If no terminology endpoint is supplied, the evaluation will attempt to use the server on which the operation is being performed as the terminology server.

The request resource that is the result of applying the definition