Coordination of Benefits: A system to eliminate duplication of benefits when you are covered under more than one group plan. Benefits under the two plans usually are limited to no more than 100 percent of the claim.
Copayment: Another way of sharing medical costs. You pay a flat fee every time you receive a medical service (for example, $5 for every visit to the doctor). The insurance company pays the rest.
Covered Expenses: Most insurance plans, whether they are fee-for-service, HMOs, or PPOs, do not pay for all services. Some may not pay for prescription drugs. Others may not pay for mental health care. Covered services are those medical procedures the insurer agrees to pay for. They are listed in the policy.