A Payment Integrity Analyst reviews healthcare claims, payments, and billing to find errors, fraud, waste, or abuse, ensuring compliance with rules (like CMS) and policies, using strong data analysis, medical coding (CPT/ICD-10), and auditing skills to prevent financial loss and improve accuracy, often working with vendors and internal teams. Key duties include auditing claims, investigating anomalies, analyzing data for trends, collaborating on billing edits, and preparing reports to support cost containment for health plans.