[Under agreement between the parties (payor and provider), a guaranteed level of income is established for the provider over a specific, pre-determined period of time. The normal course of business for the provider is submission of fee-for-service claims. Should the fee-for-service income during the specified period of time be less than the agreed to amount, a top-up amount is paid to the provider equal to the difference between the fee-for-service total and the guaranteed income amount for that period of time. The details of the agreement may specify (or not) a requirement for repayment to the payor in the event that the fee-for-service income exceeds the guaranteed amount.
( HL7V3.0 )]