Medical billing and coding and revenue cycle management are critical to maximizing physician performance and optimizing reimbursement. Physicians must be able to keep up with the rapidly changing landscape of regulatory guidelines in order to qualify for reimbursement of fees for their services. Revenue cycle management enables medical practices to efficiently track insurer outstanding balances, optimize real-time medical expenses, and maximize investment. Accuracy and efficiency throughout the reimbursement process can be ensured by both physicians and insurers by quickly identifying claims errors or delays. As this field evolves, there will be a need for an understanding of medical billing and medical costs. Coding and revenue cycle management are becoming necessary for physicians to receive optimal reimbursement within this system.