A legal fight is looming over a Trump administration proposal that would require hospitals to list their standard prices for medical services and their negotiated rates with insurance companies—prices some believe are proprietary.
Hospital and insurance groups are likely to sue if the administration moves forward with a final rule, and the litigation could raise thorny legal questions about a company’s right to be competitive and a patient’s right to make informed health-care choices.
One way hospitals and insurance groups may try to fight the rule is by claiming their negotiated prices are trade secrets, health attorneys say.
“We’ve been ...