A prescription co-payment and/or co-insurance, is the portion of the covered drug that you are required to pay each time you fill a prescription, Blue Shield pays the remainder. Usually the co-payment is a flat dollar amount, and the co-insurance is a percentage amount of the drug cost. There are usually different co-payments for generic, brand formulary, and brand non-formulary drugs (if your plan has a benefit for non-formulary drugs). Check your Evidence of Coverage (EOC) or Certificate of Insurance (COI) for your specific copayment information.
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