All Reports and Publications

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

All Reports and Publications

A Small Southeastern Hospital Had Effective Cybersecurity Controls To Prevent, Detect, and Respond To Cyberattacks

Congressional Mandate: Part B Billing Codes for Six Drugs Included Noncovered Self-Administered Versions During January 2025 - March 2026

The Three Largest Medicare Advantage Organizations Denied Requests for Long-Term Acute Care and Inpatient Rehabilitation at Some of the Highest Rates

Medicare Advantage Organizations Overturned Nearly All Appealed Prior Authorization Denials for Skilled Nursing Facility Admission, Raising Concerns About Initial Denials

California Made at Least $13.9 Million More in Medicaid Reimbursements for Clinical Diagnostic Laboratory Services Than Was Allowed by Federal and State Requirements

Community Behavioral Health Did Not Comply With Requirements When Denying Prior Authorization Requests

The Office of Refugee Resettlement Needs To Improve Its Monitoring of Unlicensed Unaccompanied Alien Children Program Care Providers’ Compliance With Background Check Requirements

Lehigh Valley Hospital Received At Least $17.8 Million in Medicare Overpayments

CMS Should Improve Its Policies and Procedures for the Oversight of States’ Reported Medicaid Expenditures to Better Protect the Financial Integrity of the Medicaid Program

CMS Potentially Overpaid Medicare Advantage Organizations $462 Million Based on Certain Unsupported Acute Stroke Diagnosis Codes

Connecticut Did Not Always Ensure Selected Nursing Homes Complied With Federal and State Background Check Requirements

Impacts of Vertical Integration in Medicare Part D on Sponsors’ Drug Costs, Pharmacy Reimbursement, and Enrollee Cost Sharing

Unclear Medicare Requirements Led to Differing Interpretations of Inpatient Rehabilitation Facility Documentation, Coverage, and Billing Requirements

Comparison of Average Sales Prices and Average Manufacturer Prices: Results for the Fourth Quarter of 2025

Utilization Trends and Medicare Part B Billing for Office-Based Peripheral Vascular Procedures Raise Questions About Program Integrity

Most Nursing Homes Throughout the United States Do Not Have Adequate or Reliable Emergency Power Systems

Medicare Payments for Positive Airway Pressure Devices Used for the Treatment of Obstructive Sleep Apnea Generally Complied With Medicare Requirements

CMS Could Strengthen Medicare Program Safeguards To Prevent and Detect Potentially Improper Payments for Virtual Check-in and E-visit Services

CMS Has Limited Oversight of Selected Compounded Drugs Prescribed to Medicare Part D Enrollees

Vibrent Health Claimed Unallowable Costs Under a National Institutes of Health Other Transaction Award

All Reports and Publications

Filters