Denial management in medical billing is the process of identifying, analyzing, correcting, and preventing rejected or denied healthcare claims. Effective denial management helps medical practices recover legitimate revenue while reducing recurring billing errors. Common causes of denials include incorrect patient information, coding mistakes, missing documentation, eligibility issues, authorization problems, and timely filing errors. A structured denial management process involves reviewing denial reasons, correcting claims, submitting appeals when appropriate, and monitoring recurring patterns. Healthcare providers can improve cash flow and reduce administrative workload by addressing denials quickly and accurately. Strong denial management also supports a more efficient revenue cycle and improves overall billing performance.