<prompt> Human: About 6 months ago my SO had hit a sign on her way to work. We went to the ER, at her request. They asked for her car insurance information as well as her health insurance. She provided both but when the bill was received they charged us the full amount that was due. No where on the bill does it state her health insurance, only her auto insurance.Weve contacted the hospital many times trying to correct the matter. Weve told them that yes, her health insurance information was given at the time but on the bill it only states her car insurance. We keep getting told theres nothing we can do about it.Is there anything that can be done? Given that the time of service was 6 months ago, Im not sure if that plays a factor or not. Any information would be greatly appreciated, even if its telling me Ill have to bite the bullet on this one.Edit: I should have mentioned that the insurance has changed since the ER trip. It was previously on her parents, where as now its on her works insurance.Assistant: Can you contact your health insurance, and submit a claim by providing them receipts?Human: At the time of her ER visit, it was on her parents health insurance she needed a month before her works insurance kicked it.Do you think it would be possible to contact her old insurance? I assume you cant bill the current one for an old ER trip.Assistant: I would also believe it would be on the old insurance. Keep in mind, if the ER is out of network, you could still be looking at a big bill.Human: I assumed we couldnt contact the old insurance on this matter but I suppose it doesnt hurt to try. And I will definitely keep that in mind, if I have to pay it then thats okay I was just looking for other options. Thanks for all your help!  <response>: Of course you can contact the old insurance company. This issue occurred while under coverage with the previous insurance company so its their responsibility to cover the bill under the terms of plan that was active at that time. Keep in mind if you had a high deductible plan and or the ED was out of network it could still be a large fee, but you should see some kind of discount. 