Hello I was wondering if I could get some advice on this. We had a pt come in for a 61790 (PSR) one month. And then came in the next month for a repeat procedure. MCR paid the 1st procedure. For the second, I had used -58 modifier and it was denied. Which I know I shouldn't have used this one from the beginning now. But then I thought, ok I'll use the -78 since it's still in the global period. And then that was denied.

Now I am confused, I know I need to add something but IDK which one. If you could give me some advice I would greatly appreciate it. I should mention that I work in an ASC.