Every year disability insurance companies deny disability claims. Applicants who have their claims denied must go through the tedious process of appealing the decision to get the benefits they need. Unfortunately, the appeal process can take a great deal of time to complete. If you are worried about your disability claim being denied, it's important that you become informed about some of the reasons that claims are commonly denied. To help you with your disability claim, we explain 4 common reasons insurers use to deny disability claims.