Every insurer maintains a list of events and circumstances that void the insured's entitlement to his or her accidental death benefit. Death by illness, suicide, non-commercial aviation, war injury, and natural causes are generally not covered by AD&D. Similarly, death while under the influence of any non-prescribed drugs or alcohol is most likely exempt from coverage. Overdose with toxic or poisonous substances and injury of an athlete during a professional sporting event may void the right to claim too.