Always send readable x-rays in with your cases. If you're unable to read a film, a consultant who is unfamiliar with the patient's mouth certainly won't be able to. A good rule of thumb is to use a critical eye and only submit x-rays to insurance carriers with the same quality and clarity as you would for a presentation to your study club. If you feel uncomfortable projecting an x-ray onto a screen for your peers, you should feel equally uncomfortable submitting that x-ray for any other purpose, including attempting to claim insurance benefits.