Which term refers to expenses that are shared between the insurer and the insured?

The term that refers to expenses shared between the insurer and the insured is cost sharing. This concept is fundamental in health insurance policies, where both the insurer and the insured contribute toward the total cost of healthcare services. Cost sharing typically includes deductibles, copayments, and coinsurance, which help to strategize the use of health services and manage overall healthcare spending. Additionally, cost sharing aids in reducing unnecessary healthcare utilization by making insured parties partially responsible for their healthcare costs.

In contrast, other options like underwriting pertain to the process of evaluating and determining the risk and premium of an insurance policy, stop loss relates to a financial strategy that limits the total amount an insurer pays in claims, and moral hazard denotes the increase in risk when individuals are insulated from the consequences of their actions, which may lead to more reckless behavior in using healthcare services. Thus, cost sharing directly addresses the distribution of healthcare expenses between both parties involved.