Has anyone used their Flexible Spending Account to pay for TT?

Maybe if you say "reconstructive surgery" rather than cosmetic or plastic surgery. This is not a "pleasure" thing and would not be necessary had you not had the disease of obesity. Therefore, I consider it reconstructive.....that's my justification.

This is how the IRS rules reads regarding tax deductible medcial expenses;

Cosmetic Surgery
Generally, you cannot include in medical expenses the amount you pay for unnecessary cosmetic surgery. This includes any procedure that is directed at improving the patient's appearance and does not meaningfully promote the proper function of the body or prevent or treat illness or disease. You generally cannot include in medical expenses the amount you pay for procedures such as face lifts, hair transplants, hair removal (electrolysis), and liposuction.

You can include in medical expenses the amount you pay for cosmetic surgery if it is necessary to improve a deformity arising from, or directly related to, a congenital abnormality, a personal injury resulting from an accident or trauma, or a disfiguring disease.

Example.

An individual undergoes surgery that removes a breast as part of treatment for cancer. She pays a surgeon to reconstruct the breast. The surgery to reconstruct the breast corrects a deformity directly related to the disease. The cost of the surgery is includible in her medical expenses.

I'm still thinking that if it's considered "reconstructive" due to dramatic weight loss and a doctor deems it medically nessecary. Worst case scenario, I have to pay the taxes on the $3400 at tax time.