Edge Functions can't process PHI?

I need to forward a healthcare eligibility check originating from my web client to a clearinghouse. The shared responsibility model states that edge functions cannot be used to process PHI data.

How would one perform something simple like this (communicating with a 3rd party vendor like a claims clearinghouse), while being HIPAA compliant?

I initially read that supabase was HIPAA compliant and assumed this meant it was safe to develop healthcare applications within its platform. But it appears there is no way to process PHI on server-side code.

I realize I can probably use pg_net to send an http request, but this feels gross and like bad practice.

Does anyone have advice on how to get around this?