In general, the more services that an outpatient receives, the greater the OPPS payment the hospital receives
The APC payment is based on the average cost of providing services within the APC. Hospitals bill for all of the services administered to a beneficiary and can receive multiple APC payments for the care provided during a single visit.
There are some services for which Medicare will not pay hospitals if those services are provided on an outpatient basis. CMS identifies certain services, such as heart surgery or hip replacement, that it believes can be safely performed on a typical Medicare beneficiary on only an inpatient basis.