Saint Vincent's financial consent form

I was looking over these forms that I have to fill out before I go to the hospital for all the pre surgery testing.  I have some questions about St. Vincent's financial consent form.  It says "I hearby guarentee payment in full....This includes any changes that a third-party payer may determine to exceed usual and customary limits."

Are they saying that I am responsible for the difference between what the agreed upon payment between the hospital and my insurance?  Am I misunderstanding?

Every EOB I've ever gotten from my insurance company has said "The provider cannot bill the patient the difference between the billed covered charge and the contracted PPO amount."

They won't bill you for anything above the contracted PPO amount.  I think that language is in there simply if you have an insurance that doesn't have a contracted PPO amount.

I only had to pay the deductible and the difference between what BC paid and what the PPO amount was.  I think I was billed right around $225, which was good considering the pre op testing charges were way over $1000.

Thank you for clarifying this, St. V's is in-network for my insurance company so I didn't understand why I would have to pay the difference.  All the legalese can get so confusing sometimes!