3d279c4a_2014_Medicare_Supplement_Plans__Benefit
[What Plan L Covers] Plan L does not cover the Medicare Part B $147 deductible [Benefit] 
Part B Deductible You may want to consider this benefit if you have Medicare Part B. Each year you must pay the Part B deductible (which is $147 in 2014) before Medicare starts to pay its share. If you have this benefit, the Medigap plan would pay this amount each year.
Blue Cross Blue Shield of Illinois - 2014 Medicare Supplement Plans
Benefit