Combination of HMO and PPO features. They provide a comprehensive set of health benefits and offer a full range of health services much the same as the HMO. However, the member does not have to choose how to receive services until they need them. The member can then opt to use the defined managed care program, or can go out-of-plan for services but pay the difference for non-plan benefits (e.g. 100 percent coverage for managed care Vs. 80 percent coverage out-of-plan).