I have United Healthcare of Utah as my primary insurer. I was not given very good odds of repair of my mitral valve by local surgeons so sent my diagnostic films to Dr. Cosgrove at Cleveland Clinic. Because Dr. Cosgrove was able to give me such a high percentage of repair (95%), I appealed to my insurance company to let me go out of network to Cleveland Clinic. They did grant my appeal and so they are paying the "allowed charges" (their judgment) at 90%. The problem comes with the disallowed charges which I still owe. For instance, the hospitalization bill was over $44,000. United chose to pay only $37,000. I'm still holding the bag for the rest, since Cleveland Clinic does not have any contractual agreements with United Healthcare of Utah. [They do contract with United Healthcare of Ohio, but that is not the same thing. United does not have the reciprocal agreements between its state organizations like Blue Cross/Blue Shield does].
In October, during the "open" period in my husband's employment, I did sign up for Blue Cross/Blue Shield as a secondary carrier. This is BCBS of West Virginia. Cleveland Clinic is considered "in network" by Blue Cross and because of the reciprocal agreements between the various state units of BCBS, I hope that eventually whatever United didn't cover will be taken care of by BCBS and any disallowed charges eventually written off since Cleveland Clinic does have a contract with Anthem BCBS. This is the way it was explained to me by BCBS Customer Service.
All this being said, those Cleveland Clinic bills that I'm currently receiving are enough to put you back in the hospital with a cardiac arrest.
As for the fear about a pre-existing clause, as long as you have been continuously insured at the time you apply for the new insurance and have had no lapse in coverage, they cannot apply a pre-existing clause. I told BCBS I had been advised to have mitral valve surgery. You can tell them you need a head transplant and they cannot deny coverage as long as you haVe been continuously insured. If you have not been continuously insured, I believe the law is that they can impose up to a six month waiting period, but that has to be decreased by the number of months you were insured in the previous six months before your application. Something like that. There is a whole website that explains the law on this subject. My notes are at my office. If I can find it, I'll post the URL.
What's worrying me also is what is going to happen to my health insurance premium with United during my employer's open/renewal period in August. In the meantime, my husband's job is changing so we will not have the back-up coverage with Blue Cross/Blue Shield.