Billing FAQS Click below to find answers to the most frequently asked questions. What is a refraction fee? Is my exam routine or medical? When is my payment due? Will I receive more than one bill for surgery? Will you file my insurance claim? Does my insurance plan cover my visit/surgery with your office? What fees are charged for insufficient funds (NSF) checks? Surprise Billing Disclosure Notice Nebraska Surprise Billing Disclosure Notice Iowa Self-Pay Waiver