9cff82d2__Your_Indispensable_Guide_TIME__What_it_is
[Term] Pre-Existing Condition [Why it matters] A PPO offers more choice than a cheaper HMO, but it also encourages patients to stay within a specific network. [What it is] 
A health-insurance plan that reimburses medical expenses at different rates, depending on whether a patient chooses to get care inside or outside a pre-determined group of providers.
Understanding the Health-Care Debate: Your Indispensable Guide-TIME
What it is