My cholesterol is 227. My PCP says I am good for TT. Surgeon says she will not perform surgery unless it's normal. Who's right?

Elevated cholesterol is not an accepted indicator of surgical complications. If this elevated cholesterol also accompanies obesity, severely elevated lipids, hypertension, or diabetes...then yes, you are not a good candidate for elective plastic surgery.  We have many may years of surgical data that has been analyzed so that we can properly evaluate our patient's surgical risk factors. Moderately elevated cholesterol is not one of them. There is either something missing from this story, or your surgeon is not up-to-date on current recommendations. Maybe he or she is looking for a reason not to operate on you? Not sure but I am confident that the other surgeons who respond will be as baffled as me. Speak to your surgeon personally and see what the full story is. Maybe you are missing some key information. If you are not comfortable, get another opinion. 

I see no need to worry or to diet to bring down a number that is meaningless )in terms of a tummy tuck's safety). There are other factors that may be playing a role in your surgeon's insistence on lowering your cholesterol. Eat multiple small feeding and do light walking. All surgeries carry risks so choose your surgeon and surgery carefully and good luck.