As you probably know, the RVU conversion factor may differ between carriers, so, unless you can get each carrier to tell you what their conversion factor is or figure it out yourself from EOBs, I think the 150% of Medicare allowable, as suggested, is a good way to do that and it will cover you so if a carrier pays more for a procedure than Medicare does you won't be leaving money on the table.
This is what we did in my practice.
Tom Cheezum, O.D., CPC