I will not try to describe it. Here is a NY Times article is about Trama Activation Fees and other fees that are being conjured up by medical providers to charge the patient.
New York Times: As Insurers Try to Limit Costs, Providers Hit Patients With More Separate Fees
Here is a blog about it.
Why is the "Trauma Activation Fee" so Outrageous? : MBAA
This has been going on for years and is increasing in popularity!
Some of the practices sound questionable to me!