A provider has asked the following question – There are different codes for follow-up paps when someone has had an abnormal one. There are the abnormal cytology ones R87.610, .611, .612, .613. Then there are the abnormal histology ones – N87.0, N87.1, D06.0, D06.1, D06.9. The question is which one should we bill under when they return for a follow-up pap, and they have had colposcopy (where you have a histology report). The cytology codes, or the histology codes?

Thanks in advance!