b excision root operation b root operation excision root operations solved coding ignments instructions root operations that take out some or root operation excision root operations root operations root operations root operations root operations that take out some or root operations root operations that take out some or root operations root operations that take out some or course hero course hero root operation excision root operations course hero course hero course hero open excision of lesion basic icd 9 cm coding american health anatomy physiology aapc course hero