Most were big institutions with large endowments, such as the University of California, Johns Hopkins and Princeton. Those three, and some others, chose nevertheless to make their self-funded student plans comply with the Affordable Care Act.

But Brigham Young University campuses in Utah, Idaho and Hawaii did not. The university publicly opposed the law’s requirement to cover contraceptives. And its plans limited the maximum annual benefit. At the time, a university spokesman told the campus newspaper in Utah, “There are numerous government-imposed requirements that we don’t believe are necessary to provide good health care to our students.”

The Idaho campus’s plan has a $4,750 deductible that must be met before it will cover maternity care for the spouse of a student. It does not cover certain major medical services, such as residential mental health care and care related to an organ transplant.

These restrictions, along with the premium costs, are central reasons the Idaho students with Medicaid coverage object to buying the university’s student plan. “It feels like they’re forcing us into a noncompliant health plan when the one we have is already compliant with Obamacare,” said Amanda Emerson, a 26-year-old student. “They’re making it really difficult to do anything otherwise.”

Deseret Mutual Benefit, the plan administrator, says that limiting benefits helps keep premiums down. “The purpose is to try to provide a plan as inexpensively as possible to the students,” said Andy Almeida, the company’s chief operating officer.

The Idaho campus is the only Brigham Young site that will no longer accept Medicaid as a substitute for the student health plan, a decision that university officials would not explain. The school’s Utah and Hawaii campuses allow students with Medicaid to waive private coverage.

Utah voters agreed to a Medicaid expansion last year, and a partial version of the program took effect in February. The state does not provide data on how many of the 33,000 students at the Provo campus are enrolled in Medicaid. The Hawaii campus has just 2,500 students; the number on Medicaid is not disclosed.