Cardiology is a specialty that sees rapid development in technology and cardiovascular procedures. There should be no knowledge deficit regarding ICD-/CPT codes for claims to be reimbursed, as it is accurate coding that gets physicians paid.
Ambulance services are handled by paramedics and other medical professionals. They are well trained and equipped to carry out the first aid and transportation.
RCM begins when a patient makes his/her appointment to visit a physician. And it ends when all payments due to the physician for services rendered are collected from payors and patients. The process from start to finish is rather complicated.