prescription medications

The issue has drawn heavy lobbying as pharmacy benefit managers play a central — and big-dollar — role in the health-care system.

Some pharmacies were small, independent operations that decided not to participate next year because of the lowered reimbursements. But they were surprised by an early dismissal, and patients with specialized needs could face difficulties in the transition.

The Centers for Disease Control and Prevention is partnering with other health officials to remind parents to avoid “candy confusion” by keep their...