Exam CIPP-US topic 1 question 153 discussion

SCENARIO -
Please use the following to answer the next question:
Miraculous Healthcare is a large medical practice with multiple locations in California and Nevada. Miraculous normally treats patients in person, but has recently decided to start offering telehealth appointments, where patients can have virtual appointments with on-site doctors via a phone app.
For this new initiative, Miraculous is considering a product built by MedApps, a company that makes quality telehealth apps for healthcare practices and licenses them to be used with the practices’ branding. MedApps provides technical support for the app, which it hosts in the cloud. MedApps also offers an optional benchmarking service for providers who wish to compare their practice to others using the service.
Riya is the Privacy Officer at Miraculous, responsible for the practice's compliance with HIPAA and other applicable laws, and she works with the Miraculous procurement team to get vendor agreements in place. She occasionally assists procurement in vetting vendors and inquiring about their own compliance practices, as well as negotiating the terms of vendor agreements. Riya is currently reviewing the suitability of the MedApps app from a privacy perspective.
Riya has also been asked by the Miraculous Healthcare business operations team to review the MedApps’ optional benchmarking service. Of particular concern is the requirement that Miraculous Healthcare upload information about the appointments to a portal hosted by MedApps.
What HIPAA compliance issue would Miraculous have to consider before using the telehealth app?