Prosthetics (wigs, breast forms, binders, gaffs, packers, etc.) were among the things that were no longer covered since they revoked the VA Directive. I am hoping your approved consult pre-dates that and will get covered, as I have a similar issue with covering electrolysis. I had three approved consults going back five years. I am still trying to find out if we are grandfathered, but from what I have heard, they cancelled all of that. I wasn't even allowed my last appointment for voice training due to coverage being cancelled.
I hope you get lucky.