FIRST APPEAL DENIED......NEED ADVICE.....NEED HELP!

I WAS DENIED MY FIRST APPEAL BY MY INSURANCE CARRIER FOR THE REVISION SURGERY.  I'M GOING TO APPEAL AGAIN, BUT THIS TIME IT'S GOING TO BE AN EXTERNAL APPEAL.   IS THERE SOMEONE WHO WENT THROUGH AN EXTERNAL APPEAL AND WON.   IF SO, WOULD YOU MIND SHARING YOUR  LETTER  WITH ME?   I'M SO DISAPPOINTED WITH MY INSURANCE CARRIER.  ACCORDING TO THEM MY BMI IS 38.7, BUT I DON'T HAVE DIABETES, A HEART PROBLEM OR HYPERTENSION SO I'M NOT A CANDIDATE FOR THE REVISION SURGERY.  I HAVE A LIST OF OTHER MEDICAL PROBLEMS, BUT BECAUSE I DON'T HAVE THE ABOVE CO-MORBIDITIES I DON'T QUALIFY. I'M NOT GOING TO GIVE UP AND I WILL CONTINUE TO APPEAL FOR AS LONG AS I CAN.  SO, IF THERE IS ANYONE WHO WON'T MIND SHARING THEIR LETTER WITH ME PLEASE LET ME KNOW. THANKS! YVETTE