Matters get worse if the in-network hospital is approaching capacity and the patient is healthy enough to be sent to a hospital across town with spare beds. If the second hospital is outside her insurance network, she could potentially receive a second surprise bill. A third could come from the ambulance that transfers her — it too might not be in-network, and no one will think to check during a crisis. She could get a fourth surprise bill if her coronavirus tests are sent to an out-of-network lab. And so on.

Even in normal times, patients with private insurance receive roughly one surprise bill for every 10 inpatient hospital admissions.

These are not normal times.

Federal law currently provides little protection. The Affordable Care Act does cap an individual’s out-of-pocket spending — but the cap only applies to in-network care. For surprise bills, the sky is the limit.

Reputable providers will appreciate that now is not the time for price gouging. But many won’t and will seek to exploit people’s medical needs for financial gain, much as they did before the coronavirus began to spread. They may calculate that can collect enough money charging exorbitant fees for out-of-network services — and still make it to an airport ahead of a mob carrying pitchforks and torches.

We need more than gauzy commitments from the president. We need a law to ban bills incurred from out-of-network providers for medical care associated with the coronavirus outbreak. Unless that commitment is ironclad, people may not believe it. And if they don’t believe it, they won’t get tested.

To date, Congress — cowed by a furious public relations campaign led by private equity and specialty physicians — has been unable to pass a law banning routine surprise billing. Though Congress has moved closer to a watered-down deal in recent months, neither the House nor the Senate has actually passed a bill.

The coronavirus should refocus Congress’s attention. At a minimum, the legislature should quickly pass a temporary measure to limit out-of-network charges for coronavirus testing and treatment.