So - are you "provider based"? In other words, does the hospital bill a clinic charge, etc., on a UB04 claim? If you are not considered an outpatient department of the hospital, you should be billing with POS 11 for office, even if located on a hospital campus. If you are billing with POS 22, reimbursement for your services is based on facility, not non-facility Medicare fee schedule. In addition, any diagnostic tests would have to be for interpretation only, or they will deny. The 96372 can't be billed by a physician/NPP in a facility setting, as the facility should charge for it (we do have some clinics that are provider-based). If you give an injection into a joint (20600-20610) for instance; you charge the professional portion, the hospital charges a fee, and the hospital charges for the drug that was injected (Kenalog, etc.)
If you are not an OP department of the hospital you should use POS 11.
I hope this helps.