I have no idea, my insurance covered every penny
It's your responsibility to know. Your attitude is part of the reason that health care has sky-rocketed out of sight. You need to ask for a itemized copy of the bill. You may not understand everything on it, but you may spot some obvious mistakes. It has been documented that over 10% of all hospital billings contain errors.
As an accountant I see weekly summaries of all claims paid out for our employees. It's a simple one line summary per employee.
About six months ago, someone had a major surgery. Still....the total charge seemed high. We called our insurance company and asked them to audit that bill. A week later we had a refund check in the amount of 28,000.00 for what the hospital called "misc charges." 28,000.00!!!!!!
By the way...don't for a minute think that you're not paying for a large part of the medical costs. Companies are charged on their prior years experiance rate. Lot's of large claims means large rate hikes. You may be paying some of it. Even if your company pays the whole premium ( no employee contribution) think of the increased profits that would flow into the company if the health care costs weren't so outlandish!! Heck, they may have more money to give out bigger and more frequent salary increases. Trust me, there are no free lunches, you are paying for a signifiant part of your surgery, one way or the other.