what charges were applied toward your deductible. If your physician is a Medicare provider, the check will be
  sent directly to his or her office. You will need this explanation of Medicare benefits in order for your
  secondary insurance company to pay your claim.
• UCR (Usual, Customary and Reasonable). This is the fee determined by your insurance carrier to be the usual
  fee charged for the same service by the average provider with similar training in your geographic area. This
  may be different than the fee your physician charges.
• Pre-Authorization. This is a requirement by your insurance carrier that certain services be authorized before
  the services are rendered. If your insurance contains this requirement, make sure your physician's office is
  aware of it.
• Superbill. This is a standard itemized "checklist of services" in widespread use. It will contain all the required
  codes (CPT and ICD-9) that will enable you to submit your claim.
• C.O.B. (Coordination of Benefits). When you are enrolled in two separate insurance plans, those plans will
  coordinate their benefits so that your claim is paid at no more than 100 percent of the covered benefits. If you
  have more than one insurance plan, make sure you notify your physician's office so the office can submit both
  claims for you.