Mrs. Duarte is enrolled in Original Medicare Parts A and B. She has recently reviewed her Medicare Summary Notice (MSN)

Mrs. Duarte is enrolled in Original Medicare Parts A and B. She has recently reviewed her Medicare Summary Notice (MSN) and disagrees with a determination that partially denied one of her claims for services. What advice would you give her?

Mrs. Duarte should file the attraction of this implied assurance within 120 days from the date of receipt of MSN through Post Office.