My dog had Cushing's before I got the insurance, and had to have his gallbladder removed (I didn't try to claim that, pre-existing). Later he was hospitalized for diabetic ketoacidosis, and died 6 hours after his release. I put in a claim which took over a month to process, because they were waiting on unrelated medical documentation from the gallbladder surgery. They denied they claim because dogs with Cushing's are more susceptible to DKA...he could have gotten DKA regardless of the Cushing's, and didn't have it at the time I got the insurance (increased susceptibility is not a diagnosed pre-existing condition). They took my money every month, and I received none of the help I expected when my dog was sick.