I have two doctors in the same practice who recently did surgery on the same patient on the same day. One did a catract extraction 66982, and the other did Ahmed. We have tried to get both paid and have used modifier -62 on professional and ASC claims. I need to know if both professionals need to have modifier -62 on them and the ASC, or is it just the professionals that need the modifier, or should just one professional claim have the modifier? The ASC we are using 66991 w/a modifier and are getting denied also. This is going to Medicare.