Medical coding errors have a significant impact on patient care and outcomes, affecting healthcare quality, reimbursement, and patient safety. This review article examines the various types of medical coding errors, their causes, consequences, and potential solutions to mitigate their effects on patient care. The accurate coding of medical procedures and diagnoses is crucial for ensuring proper reimbursement, facilitating communication among healthcare providers, and supporting clinical decision-making. However, errors in coding can lead to delays in treatment, incorrect billing, and compromised patient safety. The review explores the challenges faced by healthcare organizations in preventing and detecting coding errors, such as inadequate training, complex coding guidelines, and the use of outdated technology. It also discusses the role of electronic health records (EHRs) and coding software in improving coding accuracy and reducing errors. Furthermore, the review highlights the importance of conducting regular audits and providing ongoing education to coding staff to enhance their coding proficiency and compliance with coding guidelines. Additionally, the article examines the impact of coding errors on patient outcomes, including misdiagnoses, inappropriate treatments, and patient dissatisfaction. It also discusses the financial implications of coding errors for healthcare providers, such as claim denials, audits, and potential legal consequences. By addressing these issues, healthcare organizations can improve the quality of care, enhance patient safety, and optimize revenue cycle management.