The Healthcare Effectiveness Data and Information Set (HEDIS) is a tool used by healthcare organizations to measure performance and evaluate patient care. A HEDIS abstractor organizes patient records and identifies data within these files that are pertinent to HEDIS measures. As a HEDIS abstractor, your job duties include reviewing patient files, documenting diagnoses and treatments, and assign codes to the data that align with HEDIS domains of care. You may also help analyze the information for your organization.