Mandymphs,
I’ve had about two dozen biopsies, but it’s been a few years, thankfully! I’m not sure what the oral surgeon will decide, but a biopsy can be done during surgery under anesthesia, all my surgical biopsies were done by my ENT, and some were done as an inpatient office procedure with a local anesthesia by a pathologist, but my ENT did one office biopsy.
There are different types of biopsies as mentioned, from surgical, and office biopsies by excisional, incisional and punch biopsy. I recall caution is sometimes needed with an excisional biopsy due to the close margins if cancerous, as some cancer can be outside the margins, and think if there is a need for a surgical biopsy you would need a scan first.
Hopefully they decide none is necessary or one that is minimaly invasive, and only takes a few minutes!
Good luck