Urology billing trips up generalist billers more than people expect. The mix of office visits, in-office procedures like cystoscopy, and surgical work each comes with different bundling rules, and prior authorizations for imaging or specialized testing add another layer most billers aren't watching closely. Urology billing services require coders who are knowledgeable about this range and know which code and modifier to use for each visit type, not coding all of them in the same way, which are very different types of care. The right initial product the first time means never having to wait for resubmissions to eat into a practice's cash flow.