AP is Accounts Payable.
BILLS PAYABLE, in merchant accounts, are all bills which have been accepted, and promissory notes which have been made, are called "bills payable," and are entered in a ledger account under that name, and recorded in a book bearing the same title.
CAPITATION, generally, is a tax or payment levied on the basis of a fixed amount per person. In medical insurance, it is a method of paying for healthcare services on the basis of the number of patients who are covered for specific services over a specified period of time rather than the cost or number of services that are actually provided.
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