“While we cannot comment on rates for emergency room services..." Why not?
If you are in the insurer side, you think you have a competitive advantage compared to company Y. Sharing what you are paying per procedure is bad business
If you are on the Hospital side, you want to make sure the insurers keep paying more, and publishing means a quick race to the bottom.
This means that in most cases in america, you cant know what something is going to cost until after you get billed. Its great for literally everyone except the consumer.