Currently, we believe that some our small procedure's done ( i.e. 94640 with UHC manage care) in Urgent Care are getting denied because our claim on the 1500 has it as 19 instead of 20 These Urgent Cares are freestanding and they have medical groups next to them as well. Since this is considered a class B emergency department, do we utilize the PO/PN modifiers, and if so when do we use them? Has anyone experience the same situation? .If so, what are the steps were taken to rectify?