Will Medicaid/Medicare Cover the Removal of Excessive Stomach Skin?

I had Gastric-Bypass surgery in September of 1989. Since approximently 8 months postop, I have had a very large area of excessive skin (Flab) on my lower abdomen. I suffer from lower back pain, an irratation under the flab. It is almost always a painful red, blistery, bloody, infected, ouzing of a yellowish discharge. It is very foul smelling, to the point that I am not able to be around other people, for fear of offending them with the smell.