BCBS Flex and MD Anderson

[Cdevin]

Got a client, U65. He is undergoing an aggressive cancer treatment at MD Anderson and has 20+ doctors there that he sees. MD Anderson sent him a notice that on 11/1 they will no longer accept the Flex plan. The plan is exactly the same in network as out of network. 0 cost share for anything. What I am trying to make sense of is if MD Anderson will bill as out of network, or flat out refuse to see him. Asking here because even MD Anderson says something different every time. They have implied that they will bill as out of network, which is fine, he won't pay anything. I seem to recall seeing someone ask about this plan, and iirc MD Anderson prior. Trying to figure out what came of it. Techinically he is still in his OEP, but being U65 in texas it is just a plan A which is like $700ish. Trying to figure out correct course of action. Can he continue to see his doctors and pay the out of network cost share ($0) or are they just going to flat out refuse him and he is out of pocket 100%?