The Quick Guide to CPT Modifier 58, 59, 78, 79, 24
Choosing between CPT modifiers 58 and 78 can cause a massive billing/coding headache. The problem comes from ambiguity in the definition of modifier 58 and 78. Modifiers 79 and (to a lesser extent) 59 compound the problem. There’s even justified confusion involving modifier 24. Knowing when to choose modifier 58 over 78 or 79 over…
