I have UHC and went through 3 appeals already with a lawyer (denied each time) and am now filing a lawsuit. Ironically, I found out that someone with my exact same insuance plan through UHC was approved several months ago and UHC is claiming it was mistake. I had to pay for my ADR out of pocket but hope to get every penny back once I fight them in court. BEST of luck for ANYONE trying to get UHC to pay! I was told that they will pay in a couple years but I could not wait that long!