When checking eligibility with soft dent for x-rays we are getting information that suggest Bite Wings can be taken once per year. United Concordia has rejected some stating 1 per 18 months. There are also age limitations that are not listed. Just recently we have only been checking insurance's websites for more precise information. Why is this happening? How do we receive the information from the insurance company's for the eligibility function? We have had to write off $ because we we're mislead by the information on our software. How do we know if any other information may not be accurate.