Hi, I am very new to billing for eye surgeries and could use a little help. I have a doctor that billed out codes 67903 with dx H02.831:H02.423:H02.834 and code 15823 with the same dx as listed for code 67903. No modifiers were added to either code. From what I can tell it's okay to bill these codes together but know I have a denial stating they are bundled is there a missing modifier that I needed to added other than the 59? Again I am very new to this type of billing and welcome any help I can get.