If a patient comes into the office and is diagnosed with a certain dx (bronchitis, for example) and the nurse gives him an antibiotic from the office (not prescribed), how is this coded? What I mean is the office has the antibiotic on-site to give to the patient, but no prescribtion is written. How do we code for the antibitics? Do we use HCPCS codes? This would be oral meds. Thanks.