Some hospitals in communities less affected by the novel coronavirus moved cautiously Monday toward resuming non-emergency surgeries and procedures — a hopeful sign for patients awaiting that care and a medical system badly in need of the revenue those services provide.

Acting on guidance released Sunday night by federal officials, medical centers with relatively few covid-19 patients readied some cancer, heart and other care that has been postponed by a nationwide call to halt such procedures.

The federal government issued those voluntary guidelines March 18 to address the critical shortage of protective gear for front-line health-care workers and ensure that hospitals had enough beds for the anticipated surge in covid-19 patients.

A month later, some hospitals are confident they can handle a resumption of some non-emergency work.

“Now we’re in a very different place,” said Donald M. Yealy, chairman of the Department of Emergency Medicine at the University of Pittsburgh School of Medicine and the University of Pittsburgh Medical Center. “We have come to realize that we have plenty of those assets.”

Across the 5,500 beds in the 40-hospital UPMC system Monday, there were just 116 people admitted for covid-19 disease, the illness caused by the virus.Those patients occupied just7 percent of intensive care beds and used 6 percent of ventilators, Yealy said.

Yet the volume of surgeries performed by the system has declined 70 percent from its pre-pandemic level.

“We think we’re able to serve what’s really a pent-up demand,” Yealy said. “There’s a lot of necessary care that can be scheduled. There’s even some urgent care that has been put off.”

Hospitals depend on scheduled work such as cancer surgeries, knee replacements and non-urgent heart procedures to bring in money and balance the costly care they must provide to walk-ins and emergency patients. With much of the scheduled work canceled, they have been losing billions of dollars.

“There is no question it is the apocalypse,” said Charles N. “Chip” Kahn III, president of the Federation of American Hospitals, the trade group that represents for-profit hospitals and health systems.

Now medical centers must figure out how to provide these services in a safe environment and reassure patients who have been watching nonstop media coverage of hospitals overrun by the virus. Some people have become so fearful of contracting covid-19 at emergency rooms that they have stayed home even with chest pain, stroke symptoms and serious infections, according to doctors and early research.

“This is a phased process,” Seema Verma, administrator of the federal Centers for Medicare and Medicaid Services, said Monday about the guidance on reinstating elective surgeries. She noted the recommendations are intended for communities where the incidence of covid-19 is low, new cases are relatively sparse, and hospitals have adequate capacity in case of a surge. She emphasized that the decision whether to resume elective work rests with state and local officials.

Considerations about whether a hospital is ready to resume elective surgery include its ability “to address screening and testing for health-care providers, as well as for patients,” she said.

On Monday, Indiana Gov. Eric Holcomb (R) issued an executive order that said, among other things, that hospitals with adequate protective supplies and capacity should “conduct clinically indicated procedures.” The order said other facilities – including dental offices, plastic surgery centers and abortion clinics – will be reevaluated to determine whether they may reopen next week.

Kahn, speaking for hospitals, acknowledged that “my members really want to get reopened, but it’s going to be complicated.”

At UPMC, patients preparing to come in will be tested for the virus with nasal swabs two days before arrival, Yealy said, and separated from covid-19 patients by the greatest distance allowed in each facility.

Similar steps will be taken at the Mayo Clinic in Rochester, Minn., which is preparing to offer diagnostic procedures such as nerve and muscle conduction tests, endoscopies to diagnose and treat upper gastrointestinal problems, and some colonoscopies.

“We are taking every precaution to ensure the safety of our patients, staff and communities, while ensuring the proper resources are available to care for all patients, including staff, personal protective equipment, space and supplies,” a spokeswoman said in an email.

At Lee Health in Fort Myers, Fla., planning is underway for “a potential phased release of our restrictions on surgeries and procedures,” said Richard A. Chazal, director of the health system’s Heart and Vascular Institute.

A representative for Cleveland Clinic said that a task force is looking at how to resume surgical cases. “It will be thoughtful, responsible and take place in phases. The safety of patients and caregivers remains our top priority.”

Several medical professional organizations have been working on their own guidelines, focusing on a continuum of risk and benefit rather than an abrupt shift or a strict division between elective and nonelective surgeries.

Thomas Maddox, chair of the American College of Cardiology’s Science and Quality Committee and executive director of the Healthcare Innovation Lab at the Washington University School of Medicine in St. Louis, likened the process to the analysis a doctor would undertake before deciding on surgery for a patient.

“I think what we are trying to do is lay out the risk scales, then look at patients, decide where they fit on those risk scales and line them up,” he said.

High-risk patients, he said, should be brought in quickly, even in areas where the prevalence of the coronavirus remains high. Other decisions, he said, will vary by location.

In St. Louis, for example, the virus is less prevalent in the suburbs than downtown, so it makes sense for a medium-risk patient to go to a suburban hospital.

Underlying the success of that process is enhanced testing.

“It’s important that you can test everybody,” said James Howe, a professor of surgery at the University of Iowa Carver College of Medicine and president of the Society of Surgical Oncology.

In updated guidelines, the American Dental Association noted that “FDA-approved tests for covid-19 are not available to dentists in the U.S. Therefore, dentists should be aware that asymptomatic, healthy-appearing patients cannot be assumed to be covid-19 free.”

Many doctors noted the transformative nature of telemedicine during the pandemic, which they hope will continue as the threat of the coronavirus recedes. Providers have been able to see many of their patients online, greatly reducing the number of people who must come in to offices and hospitals.

“We’re hoping there will be a long tail,” Maddox said.

Kahn called the CMS guidelines “a step in the right direction to send a signal we need to plan our way out of this.”

But, he added: “The trouble is, there is nothing revolutionary here because there is no vaccine. We live in this reality of coronavirus that we can’t deny . . . So when you go back in, you are going to have to be taking all kinds of precautions for hospital workers and for patients.”