Modifiers which give additional information on medical treatments represented by CPT/HCPCS codes, are well known to expert coders in medical billing and coding firms. Modifiers 54, 55, and 56 are "split care" modifiers applicable with surgical operation codes with a global period of 10 or 90 days. Modifier 54: Only Surgical Care When one Physician or other competent … [Read more...] about How to Use Modifier 54 : Split Surgical Care