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[UPDATED on Jan. 30]

Joshua Bates knew something was seriously wrong. He had a high fever, could barely move and felt a sharp pain in his stomach every time he coughed.

The 28-year-old called his roommate, who rushed home that day in July 2018. The pair drove to the nearest emergency room, the Carolinas Medical Center in Charlotte, North Carolina. After several tests, including a CT scan of his abdomen, the emergency team determined Bates had acute appendicitis.

“They said my appendix was minutes away from rupturing,” Bates said.

Not mentioned, he said, was that the hospital was out-of-network with the insurance plan provided through his job. Even so, he couldn’t have jumped up and gone elsewhere. His appendix was about to burst.

He had surgery that night, which went smoothly, and went home the next day.

“Everything seemed according to plan,” said Bates.

Then the bill came.

Patient: Joshua Bates, a technical recruiter for a staffing firm, who lives in Charlotte, North Carolina. The Continental Benefits insurance plan comes with a deductible of $2,000 and an annual out-of-pocket maximum of $6,350.

Total Bill: $41,212 covering the surgery, one night at the hospital and the emergency room charges. After payments by both Bates and his insurer, the hospital sent Bates a bill for the balance, just over $28,000.

Service Provider: Carolinas Medical Center, owned by Atrium Health, a not-for-profit health system based in Charlotte.

What Gives: Bates was “balance billed” because he went to an out-of-network hospital — and, even though it was an emergency, he fell through the limited protections in existing law.

"Terrifying,” is how Bates describes the feeling when he first saw the bill for $28,000. Don’t worry, his insurer told him, it would negotiate with the hospital.

“If you pay your complete deductible, this will all go away,” Bates recalled the insurer saying. “I pay. It doesn’t get resolved.”��

More than a year later, with negotiations between the hospital and his insurer at a standstill and his credit score falling because the $28,000 debt has gone to collections, a frustrated Bates contacted “Bill of the Month.”

“From what my insurance is telling me, the hospital is just non-responsive to them trying to negotiate this price,” he said.

His situation is not unusual. A recent study found that about have at least one such charge for out-of-network care.

A balance bill is the difference between what insurers pay toward a bill and a provider’s “list charges,” which facilities set themselves and often bear little or no relationship to actual costs.

In Bates’ case, the insurer paid $8,944 toward the $41,212 charges, according to his explanation of benefits from his insurer. On top of that, Bates paid the hospital about $4,000, a combination of his annual deductible and his coinsurance for emergency care. That left $28,295 of the hospital’s charges unpaid.��

The online site , which calculates costs based on health insurers’ claims data, estimates a laparoscopic appendectomy ranges from $9,678 to more than $30,000 in Bates’ ZIP code. The for the surgery is $12,090 — completely in the ballpark of the $12,944 that Bates and his insurer already paid the hospital. Fair Health, another site that collects claims data, for an out-of-network appendectomy at $19,292 — about $11,000 less than the hospital says Bates still owes.

“It’s ridiculous. He’s a young kid who goes to the emergency room and he has insurance,” said Duane Sunby, the insurance broker for Bates’ employer.

Sunby added that Continental’s payment to the hospital was nearly 2½ times more than Medicare would have paid for similar services, but the facility is going after Bates for more than seven times what the federal government would pay. A growing outcry about such balance bills has attracted attention from statehouses and Congress, but current protections for patients often fall short.

Congress last year debated several bills that would have provided federal protection nationwide, especially for emergency room patients. But bipartisan efforts , including private equity-backed physician groups, over how to calculate what insurers should pay providers.

Bates is the kind of person who would be helped by a federal law, because his employer “self-funds” his insurance plan — all such plans are regulated by the federal government.

In the absence of federal rules, about 21 states have taken action, although a study from policy experts at Georgetown University Health Policy Institute as having comprehensive protections.

North Carolina, where Bates lives, has partial protections for people in state-regulated plans, according to the study. It limits, for example, the amount patients owe in out-of-network emergency cases. But the state law doesn’t cover Bates’ type of job-based insurance.

“We really need a federal solution,” said Maanasa Kona, an assistant research professor at Center on Health Insurance Reforms at Georgetown.

Bates’ insurer brought in third-party Advanced Medical Pricing Solutions, which examined his bill and called the nearly $28,000 “excessive charges.” It sought in September an adjustment or an explanation of the charges.

That came not long after Bates received a “final” payment notice from a collections group connected with the hospital. A credit reporting agency “told me it would continue to impact my credit score,” said Bates.

Resolution: After KHN and NPR placed inquiries about his bill with the hospital, insurer and AMPS, Bates received a call from a top executive at the Carolinas Medical Center.

“He seemed really eager to help me out,” said Bates, “which is crazy after two years of reaching out and trying to communicate with them. They call shortly after they catch wind of the story.”

However, in an email to KHN, an Atrium Health spokesperson essentially pointed to the insurer for a solution.

“We believe it is imperative that insurance companies cover the costs for patients who are unable to choose where they are treated due to a medical emergency,” wrote “We continue to be willing to work with this patient to pursue any additional payments that may be due to them from the insurer.” Continental Benefits CEO Betsy Knorr declined to comment: “It is a legal issue at this point and we do not want to prejudice the process.”

Bates is deflated.

“The hospital is trying to put all the burden on the insurance, and the insurance is trying to put the burden on them. I’m back to square one, essentially.”

The Takeaway: Insurance plans’ yearly out-of-pocket maximums apply only if you stay in-network. So, if possible, check ahead of time to see if your hospital is in-network — and the network status of anyone who might be involved with your care.

Sometimes that isn’t possible, as in Bates’ case. What then?

If you get a balance bill after your insurer has paid the provider, check state laws and with your state’s insurance regulators to see what protections you may have, said Kona, particularly if your bill resulted from an emergency room visit.

Ask your insurer or employer to pay the bill or to negotiate a discount with the provider, said Mark Hall, a law professor at Wake Forest University who studies contract law and medical billing issues.

Check online claims data websites, such as Healthcare Bluebook and Fair Health, to research what insurers pay for similar care in your area. Use that price range in negotiations about what you may owe.

Even if your employer plan is exempt from state laws limiting patient responsibility for out-of-network emergency care, ask the provider to honor that benefit. They don’t have to agree, but it can be worth a shot.

Hall also said patients may be able to hire a lawyer and whether the amount being charged is reasonable, although that could be costly and success is not guaranteed.

NPR produced and edited the audio report by NPR’s Selena Simmons-Duffin.

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