This sounds strange to me. I have had 28 Basal Cell Carcinomas removed but never without biopsy first. The spot is removed and sent to the lab to see if it's a BCC and if it is how wide and how deep the doctor has to remove it so all the cells are gone. It's odd your doctor just "zapped" it off.
The surgery for a BCC is done in the office. It's very quick and painless. BCC is not life threatening and doesn't spread to other organs. It gets removed and that's it. Once in a while a BCC will grow back but in the same spot and just needs to be removed again but in over 90% of cases the first removal is a cure.