medicare would become your primary and your exsisting insurance would become your secondary. But talk to your exsisting insurance and ask them how they will work as a secondary. Some secondaries will just follow the rules of the primary. for example: if you use to need a referral from your exsisting and they follow medicare's rules then when you have medicare as your primary you wouldnt need to worry about referrals, because medicare doesnt require referrals.
Hugs and prayers, If it was easy being a lupie,
~Suzanne~ the whole world would be one
diagnosed in May '95 with lupus nephritis, hypertension, hypothyroidism, avascular necrosis (knee) '98, kidney transplant April '06, pseudo-tumor cerebri '07, AVN ankles and hips '07, depression '07
prednisone, cellcept, prograf, lopressor, allopurinol, synthroid, diamox, OsCal +D, melatonin, celexa, pepcid, oxycontin for pain