Presumptive disability

Assumption of total disability when an insured is considered totally disabled (blindness, loss of hearing, speech, or limbs). The insurance company may pay a lump sum in addition to monthly payments for a maximum benefit period.
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A disability involving loss of sight, hearing, speech or any two limbs, which is presumed to be a permanent and total disability. In such cases, the insurer does not require the insured to submit to periodic medical examinations to prove continuing disability.

Prevailing charge

Fee that is most frequently charged in an area by a specialty group of physicians. The top of this range establishes an overall limitation on the charges that a carrier, which considers prevailing charges in reimbursement, will accept as reasonable for a given service without special justification. In the Medicare program, this factor was previously used in determining payment.

Prevalence

Number of existing cases of a disease or condition in a defined population at a specific time. Calculation: Divide the number of persons with the disease by the total population of the defined group to obtain the prevalence rate of a disease.

Prevention

Action taken to diminish the onset of disease or an injury such as hand washing, refrigeration of foods, no smoking, little or no alcohol intake, prenatal care, and exercise.
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Elimination of causes of loss.