retired employees had to go through the marketplace to buy new supplemental insurance.
While her old insurance was still in place, she fell and shattered her upper femur. She was operated on and in a rehab/nursing home through the transition from one insurer to the new one. The new insurer is refusing to pay for the rehab facility saying the stay began before their insurance took effect.
The old insurer said their responsibility ended on December 31, 2015.
What options do I have here to help my mother?