<prompt> Human: Last month, I had a septoplasty surgery for my deviated septum. The surgery was performed by a doctor from my otolaryngology office at a local hospital as an outpatient procedure.Before the surgery, the otolaryngology office who is in-network with my insurance company told me how much Id owe them, which would make me meet my deductible. They told me that Id also be billed by the hospital, and then by the anesthesia company after the surgery. They explicitly told me that although the hospital is technically out-of-network, it would be processed as in-network and my 9010 co-insurance would be honored, but that they didnt have any information about how the anesthesia company would bill me. I thought this sounded strange and I was worried that the hospital would have no idea what they were talking about, but when I called the hospital for an estimate, they told me the same thing and my estimate reflected that it was only about 550. I called the anesthesia company every day up to the day before the surgery for an estimate and to ask whether theyd be processed as in-network or out-of-network, but each time I was blown off and told that they needed to speak to a supervisor and call me back later. On the day before the surgery, I did some research on average ranges of out-of-pocket anesthesia costs and decided that the anesthesia cost would still be doable even without any co-insurance.At this point, it may seem like Im foreshadowing that the anesthesia company screwed me over, but that actually doesnt seem to be the case.When I arrived at the hospital, they again were on the same page about honoring my co-insurance, and I was charged the previously quoted amount. I figured that was the last of the hospital billing and that Id only have to worry about a bill from the anesthesia company after the surgery from that point on.Yesterday I received an Explanation of Benefits form from my insurance company. The form lists an anesthesia charge which I figured would be processed separately since there was a separate anesthesia company which seems very reasonable about 370, plus about 290 for general medical services and supplies, which Im not sure are related to the anesthesia company or the hospital. However, there are also charges for operating room and recovery room which total over 9000. The EOB form lists every single charge as out-of-network and thus my insurance company isnt paying a cent.What can I do in this situation? My first thought is that this has something to do with the anesthesia company being out-of-network, but surely operating room and recovery room charges would be attributable to the actual hospital, right? If so, did the hospital screw up or did my insurance company screw up? Even though 3 separate people 1 from the otolaryngology office, 2 from the actual hospital told me that the hospital would honor my co-insurance, Im worried that theyre going to play dumb since I didnt get that in writing. Ive never been in this situation before so Id really appreciate any advice I can get. Thank you.  <response>: Did you ever call your insurance company and ask them if the hospital would be considered in network? Id think thats up to the insurance more than the hospital about whether or not theyd honor the hospital as in network. 