This is really affecting doctors and patients. Patients are not getting the drugs they need or the authorization for a critical procedure. Doctors' cash flow is interrupted.
A lot of admin workers are backed up, and that itself is leading to problems too.
Why the backup? Its not just electronic data exchange being offline. Its that everything is now "going to paper" (submitted hard copy) which requires humans. Those humans used to take care of the actual work. Now they are stuck shlepping paper from A to B instead.
I submitted two links explaining this in more detail yesterday