Can someone explain to me when to use the 33 modifier when billing for a Colonoscopy? Is it on any screening colonoscopy on only with codes G0105 and G0121?
The 33 and the PT are for use on non preventive codes when service was performed for preventive reasons. The 33 is for commercial payers for any service that meets the definition of a task force A and B preventive service. The PT is Medicare only and is used for no preventive colonoscopies. Such as the colonoscopy with polypectomy, when performed while the patient presented for a screening procedure. You will not use he G code for screening colonoscopy, you will use the polypectomy code and attach? the PT modifier for Medicare or the 33 for commercial.If you are reporting separate anesthesia charges to Medicare, you will report the services with a 33 modifier if the screening did not turn therapeutic and a PT modifier if the screening did turn therapeutic. Reporting the different modifiers will tell Medicare whether they will waive the copay or not.