The Medicare fee schedule takes into account the difference in the allowable amount received for POS "22" versus "11". Our Medicare Carrier (BCBS of Alabama) has an allowance under the "Facility" column in the fee schedule for services rendered in the outpatient hospital setting, and then another allowance under the "Non-Facility" column for services rendered in the doctor's office. For 99183 in Georgia, the allowance is $116.16 in POS 22, and $195.91 for POS 11. Some fee schedules may also refer to this as the "site of service" differential in their allowances.