Prior Authorization Reference Implementation Provider Client Server

This is a Client Server for the Da Vinci Prior Authorization Reference Implementation, which can be found here. The Client Server is used to be the provider using the Prior Auth service. Currently the server handles subscriptions (Rest-Hook and WebSocket).

A live demo is hosted by HL7 FHIR Foundry, where you may also download curated configurations to run yourself.

Requirements

• Java JDK 8

Getting Started

Build, test, and start the microservice:

./gradlew install
./gradlew clean check
./gradlew run

Run in debug mode:

./gradlew run --args='debug'

Access the microservice:

curl http://localhost:9090/fhir/SubscriptionNotification
curl http://localhost:9090/fhir/Log

Using Rest-Hook Subscriptions

The Client Server provides the /SubscriptionNotification endpoint which can be used to receive Rest-Hook notifications by the Prior Auth service. To use the Prior Auth service read the documentation on the Prior Authorization Server Reference Implementation.

To use the Rest-Hook endpoint submit a Subscription to /Subscription on the Prior Auth server with the channel.endpoint set to http://localhost:9090/fhir/SubscriptionNotification?identifier={identifier}&patient.identifier={patient}&status=active.

When the ClaimResponse is updated the Prior Auth server will send a POST request to the channel.endpoint provided. The Client server decodes the request, polls for the updated ClaimResponse and then deletes the ClaimResponse if the outcome is complete or error.

Using WebSocket Subscriptions

The src/main/resources directory provides the WebSocket subscription implementation. To use it open index.html. Once the Prior Auth server is running connect the WebSocket to the server by clicking the Connect button in the top left corner. When a Subscription logical id is ready to be bound enter the id in the text box and hit Subscribe.

FHIR Services

The service endpoints in the table below are relative to http://localhost:9090/fhir.

Service	Methods	Description
/SubscriptionNotification	POST	Endpoint to send notifications for an update Claimresponse.
/Log	GET	Gets the microservice log

Questions and Contributions

Questions about the project can be asked in the Da Vinci PAS stream on the FHIR Zulip Chat.

This project welcomes Pull Requests. Any issues identified with the RI should be submitted via the GitHub issue tracker.

As of October 1, 2022, The Lantana Consulting Group is responsible for the management and maintenance of this Reference Implementation. In addition to posting on FHIR Zulip Chat channel mentioned above you can contact Corey Spears for questions or requests.