Probably, but you cannot assume that and, regardless, there are still some issues. And they may not approve it for you right bnow.
Each insurance company is different, and each has its own rules with respect to "coverage." It used to be that a 500 gram reduction (from each side) would be enough to qualify for insurance coverage, but that is no longer the case and cannot, in any event, be assumed to be the case. You'll first have to contact your company to make sure it's covered, and then you have to find a surgeon who will accept the payment the insurance company says is "usual and customary." That may or may not be easy to do. If you start with the surgeons who participate in the insurance company you'll be off to a good start. If you'd rather use a different surgeon, and you have out-of-network benefits, you can contact the surgeon's office and see if he/she will accept that payment.
The insurance company may also ask you to lose weight and/or try conservative therapy before making a determination. In your case, since you weigh 223 pounds and are 5' 1" tall, you should undergo significant weight loss before considering this surgery as that is undoubtedly a contributing factor to your pain and, furthermore, the risks of this surgery are much in people who have BMI (Body Mass Index, which generally addresses obesity and the relative contributions of your height and weight) as high as yours is. Yours is 42.1; anything over 30 is considered obese and increases the risks of surgery.
Then, you'll need the help of a plastic surgeon to submit a letter of precertification (typically including your height, weight, bra size, specifics of any pain that you have and how your enlarged breasts affect your health and quality of life) and photos and to make sure that everything is set before you have the surgery.
I hope that this helps and good luck,