New Company New Insurance

Hello. Ive accepted an offer to work for a new employer and they have Care First (Blue Cross Blue Shield) of Maryland. A quick search in the Insurance by State section, looks like care first will cover some procedures. Does anyone know about this insurance and their policies or ryders the company has to buy to be covered? My new company has offered to buy ANY insurance extra policy I require for my family. So I'm trying to find out what =it is for bariatric surgury.