[dghlsakjg]

I think he meant literally criminal.

The hospital double billed for over $100k worth of services on the original invoice.

At a certain point a pattern of issuing inaccurate invoices crosses the line into negligence.

If a business just have a habit of blasting out invoices that bill for services never received, and they know that they keep doing this, and only correct it when the customer points it out, at a certain point it turns into a crime.

[MattyRad]

From a quick Google query, it says that ~%90 of Americans have health insurance (which seems higher to me than I'd expected). I'd be very interested in knowing the number of uninsured, negligent/nefarious, and exorbitant invoices that are issued as a percentage of all invoices, for the purpose of determining the scale of criminality with respect to your description.