As a medical record reviewer, you review medical charts to ensure they are complete, accurate, and in compliance with all guidelines and regulations. Medical record reviewers also help create summaries of medical records for various purposes, such as law enforcement investigations. Depending on the needs of your employer, you may sort and index records, prepare case reports, abstract data, or help enter information into digital systems. Many medical record reviewers work exclusively for a single healthcare company, but others work for outside contractors. Medical record reviewers typically work regular hours, but on rare occasions, employers may ask you to work outside of regular hours to help find missing records for patients that need emergency care.