This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A fixed fee that subscribers to a medical plan must pay for their use of specific medical services covered by the plan.

n. A fixed fee paid by subscribers to a medical insurance scheme for each treatment or service in addition to a membership fee.

"NMFA encourages Congress to require DoD to utilize peer-reviewed research involving beneficiaries and prescription drug benefit options, along with performing additional research involving TRICARE beneficiaries, before making any recommendations on prescription drug benefit changes, such as copayment and tier structure changes for military service members, retirees, and their families."

copay   

claimant    downpayment    embayment    nonpayment    payment   

coinsurance    co-payments    deductibles