This page is part of the SMART Web Messaging Implementation Guide: STU1 (v1.0.0: STU1) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Activity Catalog

These activities serve as navigation targets for ui.launchActivity messages. They are designed to describe navigation points within an EHR environment. We focus on defining common activities that are likely to exist across multiple EHR systems, rather than creating a fine-grained EHR-specific workflow model. It’s important to note that this is an extensible set; while we define a set of standardized activities using “bare” keywords like order-sign, any EHR may support custom activities using fully-qualified URIs like https://my-ehr/custom-activity-name.

Standardized activities follow the same naming convention as CDS Hooks, with noun-verb form. In addition to following the same naming convention, we’ll align with the actual names of existing CDS Hooks activities where feasible.

Conformance Language

The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this specification are to be interpreted as described in RFC2119.

appointment-book

See CDS Hooks appointment-book

Parameters

Name	Optionality	Description
appointmentLocations	REQUIRED	FHIR Bundle of FHIR Appointment resource locations in draft status, and any other supporting data.

order-review

See CDS Hooks order-sign for a similar operation.

Parameters

Name	Optionality	Description
draftOrderLocations	REQUIRED	array of draft order locations (references to) already existing in the scratchpad. See the scratchpad.* operations.

problem-review

Allow the EHR user to add a new problem to the patient’s problem list.

Parameters

Name	Optionality	Description
problemLocation	REQUIRED	Reference to a pre-existing FHIR Condition resource which is used by the EHR to pre-populate the data entry screen presented to the user.