<human>: I recently went on my wife's insurance plan which is a Cigna high deductible plan.  We did our due diligence and made sure that all the doctors I see are covered by the plan, which they were.
 
Then I had to spend two nights in the hospital because of an intestinal blockage.  I went to the same hospital I've been going to all my life, Massachusetts General Hospital.  Just yesterday I received a bill for over $13,000 because they said that Mass General is an out of network hospital and will be covered as out of network.  Apparently even though all my doctors who work at Mass General are covered, the hospital itself is not covered.  

Medically, I have been through hell including a colectomy, a colostomy bag and 3 surgeries as well as numerous complications.  We are trying to prove that it is medically necessary that I go to this particular hospital and then they might change my claim to in network status.  

Does anyone have any thought on this situation?

Can you provide a brief overview of the text?
<bot>: I went to a hospital where the doctors are in network but the hospital is not and was charged 13,000 in medical bills.