Managed care
In terms of using such a plan, unlike an HMO plan, which has a copayment cost share feature (a nominal payment generally paid at the time of service), a PPO generally does not have a copayment but offers a deductible and a coinsurance feature. The deductible must be paid in full before any benefits are provided. After the deductible is met, the coinsurance benefits apply. If the PPO plan is an 80% coinsurance plan with a $1,000 deductible, the patient pays 100% of the allowed provider fee up to $1,000. The insurer will pay 80% of the other fees, and the patient will pay the remaining 20%. Charges above the allowed amount are not payable by the patient or insurer but written off as a discount by the physician.
Perpetual insurance
Perpetual insurance is a type of homeowners insurance policy written to have no term, or date, when the policy expires. From the effective start date, the coverage exists for perpetuity. The insured deposits money, called a deposit premium, with the insurer for insurance for the life of the risk. The deposit is many times larger than the cost of a non-refundable, annual premium for an equivalent policy with a one-year term. The insurer must earn enough income from investing the deposits to cover losses and operating expenses for the model to be economically viable. Upon cancellation, the insured is entitled to a full refund of the initial deposit premium, usually without interest. Perpetual insurance, first issued in the U.S. in Philadelphia in 1752, is still used for fire and homeowner's insurance.