At issue here are regulations promulgated by the Department of Health and Human Services (HHS) under the Patient Protection and Affordable Care Act of 2010 (ACA), which, as relevant here, requires specified employers’ group health plans to furnish “preventive care and screenings” for women without “any cost sharing requirements,” 42 U. S. C. §300gg–13(a)(4). Congress did not specify what types of preventive care must be covered; it authorized the Health Resources and Services Administration, a component of HHS, to decide. Ibid. Nonexempt employers are generally required to provide coverage for the 20 contraceptive methods approved by the Food and Drug Administration, including the 4 that may have the effect of preventing an already fertilized egg from developing any further by inhibiting its attachment to the uterus. Religious employers, such as churches, are exempt from this contraceptive mandate. HHS has also effectively exempted religious nonprofit organizations with religious objections to providing coverage for contraceptive services. Under this accommodation, the insurance issuer must exclude contraceptive coverage from the employer’s plan and provide plan participants with separate payments for contraceptive services without imposing any cost-sharing requirements on the employer, its insurance plan, or its employee beneficiaries.