Do I Need A Medigap Plan? 
I ca n't say that anyone really `` needs '' a Medigap plan but it is a good idea . Original Medicare only covers about 80 % of your hospital and outpatient charges . Seniors with a healthy bank account may not need or desire to purchase a Medigap -LRB- supplement -RRB- plan . While you may be healthy now , your health can change at any time . If you are hospitalized 3 times during a calendar year for unrelated medical conditions you will have to pay a deductible of $ 1184 -LRB- 2013 Medicare Part A deductible -RRB- for each admission . Medicare Part B outpatient charges can become expensive as well . After you have paid the calendar year Part B deductible of $ 147 -LRB- for 2013 -RRB- you are responsible for 20 % of the remaining charges not paid by Medicare . An $ 800 CAT scan can leave you owing several hundred dollars . Your 20 % share of Part B expenses has no upper cap . Medicare supplement plan F covers 100 % of approved Medicare Part A and Part B charges . Do you `` need '' a Medigap plan ? Only you can decide , buy for most it is a wise choice . 