Anesthesiology is a branch of healthcare that deals with perioperative (before, during, and after operation) pain prevention, diagnosis, and treatment. Anesthesiologists provide surgical patients with anesthetics to prevent pain and other sensations. They monitor patients’ vital signs to ensure they don’t change throughout the operation. Medical professionals that specialize in anesthesia undergo demanding residency and medical school training. They must know anesthetic pharmacology, organ system physiology, and how to treat complications before and after surgery. Modern medicine relies on anesthesiology to make surgery safe and painless. Therefore, let’s start with anesthesiology’s CPT Codes and their definitions. Learn more:CPT codes for anesthesia.