Final answer:
Medicare Part C, also known as Medicare Advantage, is the type of Medicare policy that requires insurers to use specific healthcare providers/hospitals except in emergency situations.
Step-by-step explanation:
The type of Medicare policy that requires insurers to use specific healthcare providers/hospitals except in emergency situations is Medicare Part C, also known as Medicare Advantage.
Medicare Part C is a private insurance alternative to Original Medicare (Part A and Part B) and is offered by private insurance companies approved by Medicare. These Medicare Advantage plans usually have a network of healthcare providers and hospitals that policyholders must use for non-emergency healthcare services. If policyholders seek care outside of the network, they may have to pay higher out-of-pocket costs or the services may not be covered.