If the Social Security Administration (SSA) determines that you owe IRMAA, you have the right to appeal the ruling. A life-changing event can be grounds for a successful Medicare IRMAA appeal. Examples of potentially qualifying life-changing events include : Marriage or divorce Work stoppage or reduction Loss of income from pension or income-producing property If you have amended a tax return that was used in the IRMAA determination or if the Internal Revenue Service has recently corrected some of your tax data, those might also be grounds for appeal.