Your umbilical hernia may be covered by your health insurance and can be repaired at the same time as your liposuction procedure. Why have two surgical procedures involving anesthesia and recovery time, when you can have one and recover at the same time? Consult a Board Certified Plastic Surgeon.
Certainly, the hernia is not zero risk, but I do not believe you need to be exceptionally concerned about it and its presence is not likely to compromise the quality of your operation. What it does suggest, however, is a weakness in your abdominal wall. If you are getting liposuction to treat an abdominal bulge, it may well be a muscle problem rather than a fat problem. In your case it would be critical to see a board certified plastic surgeon who does more than just liposuction to be evaluated.Best,Dr. Pyle