You would want to have CoolSculpting consultation with a medical professional to ensure that what you have is not an umbilical hernia. The suction during the CoolSculpting treatment would definitely be a problem, if you actually do have a hernia. If you are hernia free and are deemed to be a good candidate , you would absolutely be able to receive a CoolSculpting treatment in the abdominal area. Having performed over 10,000 treatment hours over the last several years, we have seen our share of "outie" belly buttons and have had no problems at all. I hope that you turn out to be a candidate for Coolsculpting. The results are very natural, and are permanent. Good luck with everything!