Hospital bills can sometimes appear so dense and unintelligible that many Americans simply pay them without bothering to carefully check the details. According to Bankrate.com, here are some of the more common hospital billing mistakes to look out for:

n Being double-charged for the same procedure, tests or supplies.

n Paying for too many days. Be aware that most hospitals won’t charge for the discharge day.

n Being charged for a private room, when in fact you only had a semiprivate room.

n Paying for a test that was ordered but never given.

n Paying for a high-cost brand-name medication when you were given a far cheaper generic version.

– Marshall Loeb, MarketWatch