I got a coding denial from my work saying that RT modifier 73130 is invalid and needs a valid modifier. This X-ray was performed 3 times (AP, Lateral, Oblique) on just the right side on the wrist. After all that my manager is saying that it's not billed with appropriate modifier. I am little stuck because I can't use Mod 50 (since it is on just the right side), XU I can't because it is the only x-ray performed, 76/77 (normally has to have 2 x-rays code to use either one of these modifiers). I am thinking of modifier 26 but not sure why. The payor is Amerigroup. Please help!