Health

  Claim submission is more than simply sending medical bills to an insurance company. Every payer enforces strict filing deadlines, and Aetna is no exception. Missing the timely filing limit can result in denied claims, delayed reimbursements, and unnecessary revenue loss—even when the medical services provided were completely valid. For physicians, hospitals, ambulatory surgery centers, laboratories, and medical billing companies, understanding Aetna's filing requirements is essential for maintaining a healthy revenue cycle. This guide explains how Aetna timely filing works in 2026, common mistakes providers make, filing limits by plan type, appeal timelines, and proven strategies to avoid late claim denials. Understanding Timely Filing in Medical Billing Every insurance company establishes a specific period during which healthcare providers must submit claims for payment. This period is known as the timely filing limit . The filing window begins on the patient's date of servi...