Thankfully reversed, but took a lot more effort than it should... I had a kidney stone, and had to be transferred from Hospital A to Hospital B for a procedure

Thankfully reversed, but took a lot more effort than it should... I had a kidney stone, and had to be transferred from Hospital A to Hospital B for a procedure, as A didn't have a urologist available. I was transported by ambulance. At the destination hospital, a transporter (person with a gurney) was waiting at the ambulance bay and I was moved from ambulance gurney to hospital gurney and wheeled into surgery. I did not go through registration or admission in the ER. I did not speak to a provider in the ER. I was not put in a room, nor was a room allocated for me. But because the physical transfer happened (in the -hallway-, mind you) of the ER, they tried to bill my insurance for a $3,800 ER incident, on top of the OR and procedure costs.