Is your wc case closed or denied?
Do you have an atty on your side? (a good one I hope )

I know states vary with wc so not sure if this will work in your case.

I was able to use my private ins as a secondary payer after wc denied my claim.
Mine was a multiple repetitive strain injury that progressed to TOS.

My atty wrote a letter to the hospital & PT billers telling them basically to continue my care using a secondary payer , but also placing a hold on the billing, as we are appealing the denial and until the claim was heard or settled & finalized..

I also went outside the wc environment and by paying cash was able to see a very good chiropractor & got a independent evaluation from a advanced PT person. Both were extremely helpful to my recovery , more so than the general medical system...

In the end some bills got paid by wc and some were subtracted from the settlement monies. Since i did recover quite well, I didn't feel a need to continue in the wc system to a hearing and so my scheduled hearing time became a settlement negotiation..