A tummy tuck is considered cosmetic and is not covered by insurance. In some instances insurance will cover a panniculectomy. This is a procedure that removes a hanging flap of abdominal tissue due to the tissue causing other medical issues such as rashes or infections. This is not the same thing as a tummy tuck. Tummy tucks address loose abdominal tissue and underlying muscle separation.
Unfortunately for you insurance does not cover a tummy tuck since it is a cosmetic procedure. Some patients have diseased and infected skin at the lower abdomen and it can be covered by insurance as a procedure known as a "panniculectomy".