I have to wonder why there were 3 sessions so close together. In 9 days and then in 5 days, did a huge new crop of skin tags pop up in a painful area that required removal???
What it looks like, "on paper", is that the doctor spread the removal out to three sessions to maximize reimbursement. I am NOT saying that's what they did, I'm saying that's what it LOOKS like, without further information, and I'm pretty certain that's what it looks like to the insurance company as well. If the documentation doesn't show the medical necessity of the three sessions, you might as well write off the 2nd two sessions, educate the provider, and call it a day.