Carmen Quintero works an early shift at a distribution warehouse that ships N95 masks and other products to a nation under siege from the coronavirus. On March 23, she developed a severe cough, and her voice, usually quick and enthusiastic, was barely a whisper.

A human resources staff member told Quintero she needed to go home.

“They told me I couldn’t come back until I was tested,” said Quintero, who was also told she would need to document that she didn’t have the virus.

Her primary care doctor directed her to the nearest emergency room for testing because the practice had no coronavirus tests.

The Corona Regional Medical Center is just around the corner from her house in Corona, California, and there a nurse tested her breathing and gave her a chest X-ray. But the hospital didn’t have any tests either, and the nurse told her to go to Riverside County’s public health department. There, a public health worker gave her an 800 number to call to schedule a test. The earliest the county could test her was April 7, more than two weeks later.

At the hospital, Quintero got a doctor’s note saying she should stay home from work for a week, and she was told to behave as if she had COVID-19, isolating herself from vulnerable household members. That was difficult — Quintero lives with her grandmother and her girlfriend’s parents — but she managed. No one else in her home got sick, and by the time April 7 came, she felt better and decided not to get the coronavirus test.

Then the bill came.

The Patient: Carmen Quintero, 35, of Corona, California, who works at a distribution warehouse. She has an Anthem Blue Cross health insurance plan through her job with a $3,500 annual deductible.

Total Bill: Corona Regional Medical Center billed Quintero $1,010, and Corona Regional Emergency Medical Associates billed an additional $830 for physician services. She also paid $50 at Walgreens to fill a prescription for an inhaler.

Service Provider: Corona Regional Medical Center, a for-profit hospital owned by Universal Health Services, a company based in King of Prussia, Pennsylvania, that is one of the largest health care management companies in the nation. The hospital contracts with Corona Regional Emergency Medical Associates, part of Emergent Medical Associates.

Medical Service: Quintero was evaluated in the emergency room for symptoms consistent with COVID-19: a wracking cough and difficulty breathing. She had a chest X-ray and a breathing treatment and was prescribed an inhaler.

What Gives: On that day in late March when her body shook from coughing, Quintero’s immediate worry was infecting her family, especially her girlfriend’s parents, both over 65, and her 84-year-old grandmother.

“If something was to happen to them, I don’t know if I would have been able to live with it,” said Quintero.

Quintero wanted to isolate in a hotel, but she could hardly afford to for the week that she stayed home. She had only three paid sick days and was forced to take vacation time until her symptoms subsided and she was allowed back at work. At the time, few places provided publicly funded hotel rooms for sick people to isolate, and Quintero was not offered any help.

For her medical care, Quintero knew she had a high-deductible plan yet felt she had no choice but to follow her doctor’s advice and go to the nearest emergency room to get tested. She assumed she would get the test and not have to pay. Congress had passed the CARES Act just the week before, with its headlines saying coronavirus testing would be free.

That legislation turned out to be riddled with loopholes, especially for people like Quintero who needed and wanted a coronavirus test but couldn’t get one early in the pandemic.

“I just didn’t think it was fair because I went in there to get tested,” she said.

Some insurance companies are voluntarily reducing copayments for COVID-related emergency room visits. Quintero said her insurer, Anthem Blue Cross, would not reduce her bill. Anthem would not discuss the case until Quintero signed its own privacy waiver; it would not accept a signed standard waiver KHN uses. The hospital would not discuss the bill with a reporter unless Quintero could also be on the phone, something that has yet to be arranged around Quintero’s workday.

Three states have gone further than Congress to waive cost sharing for testing and diagnosis of pneumonia and influenza, given these illnesses are often mistaken for COVID-19. California is not one of them, and because Quintero’s employer is self-insured — the company pays for health services directly from its own funds — it is exempt from state directives anyway. The U.S. Department of Labor regulates all self-funded insurance plans. In 2019, nearly 2 in 3 covered workers were in these types of plans.

Resolution: As lockdown restrictions ease and coronavirus cases rise around the country, public health officials say quickly isolating sick people before the virus spreads through families is essential.

But isolation efforts have gotten little attention in the U.S. Nearly all local health departments, including that of Riverside County, where Quintero lives, now have these programs, according to the National Association of County and City Health Officials. Many were designed to shelter people experiencing homelessness but can be used to isolate others.

Raymond Niaura, interim chairman of the Department of Epidemiology at New York University, said these programs are used inconsistently and have been poorly promoted to the public.

“No one has done this before and a lot of what’s happening is that people are making it up as they go along,” said Niaura. “We’ve just never been in a circumstance like this.”

Quintero still worries about bringing the virus home to her family and fears being in the same room with her grandmother. Quintero works at a warehouse that distributes 3M products including personal protective equipment as well as other companies’ products. Quintero returns from work every day now, puts her clothes in a separate hamper and diligently washes her hands before she interacts with anyone.

The bills have been another constant worry. Quintero called the hospital and her insurance company and complained that she should not have to pay since she was seeking a test on her doctor’s orders. Neither budged, and the bills labeled “payment reminders” soon became “final notices.” She reluctantly agreed to pay $100 a month toward her balance — $50 to the hospital and $50 to the doctors.

“None of them wanted to work with me,” Quintero said. “I just have to give the first payment on each bill so they wouldn’t send me to collections.”

The Takeaway: If you suspect you have COVID-19 and need to isolate to protect vulnerable members of your household, call your local public health department. Most counties have isolation and quarantine programs, but these resources are not well known. You may be placed in a hotel, recreational vehicle or other type of housing while you wait out the infection period. You do not need to have a positive COVID test to qualify for these programs and can use these programs while you await your test result. But this is an area in which public health officials repeatedly offer clear guidance — 14 days of isolation — which most people find impossible to follow.

At this point in the pandemic, tests are more widely available and federal law is very clearly on your side: You should not be charged any cost sharing for a coronavirus test.

Be wary, though, if your doctor directs you to the emergency room for a COVID test, because any additional care you get there could come at a high price. Ask if there are any other testing sites available.

If you do find yourself with a big bill related to suspected COVID-19, push beyond a telephone call with your insurance company and file a formal appeal. If you feel comfortable, ask your employer’s human resources staff to argue on your behalf. Then, call the help line for your state insurance commissioner and file a separate appeal. Press insurers — and big companies that offer self-insured plans — to follow the spirit of the law, even if the letter of the law seems to let them off the hook.

Clarification: This story has been updated to explain Carmen Quintero’s employment. She works for a distribution warehouse that handles 3M products and other products but she is not an employee of 3M.

Bill of the Month is a crowdsourced investigation by Kaiser Health News and NPR that dissects and explains medical bills. Do you have an interesting medical bill you want to share with us? Tell us about it!