CMS has released the "Medicare Fee-for-Service 2015 Improper Payments Report," which reports improper payment rate for 2015 was 12.1 percent.
Here are 21 states with above average improper payment rates, according to the Council for Medicare Integrity. States are listed in order form highest percentage of improper payment rates to the lowest.
Louisiana
• Projected improper payment rate: 19.4 percent
• Projected overpayments: $1.25 billion
Texas
• Projected improper payment rate: 17.3 percent
• Projected overpayments: $4.3 billion
North Dakota
• Projected improper payment rate: 17.1 percent
• Projected overpayments: $100 million
Wyoming
• Projected improper payment rate: 16.7 percent
• Projected overpayments: $63.9 million
Georgia
• Projected improper payment rate: 16.5 percent
• Projected overpayments: $1.61 million
New Mexico
• Projected improper payment rate: 15.6 percent
• Projected overpayments: $212 million
Kentucky
• Projected improper payment rate: 15.4 percent
• Projected overpayments: $897.7 million
Oklahoma
• Projected improper payment rate: 15.4 percent
• Projected overpayments: $658.1 million
Illinois
• Projected improper payment rate: 14.7 percent
• Projected overpayments: $2.53 billion
Alabama
• Projected improper payment rate: 14.3 percent
• Projected overpayments: $885.6 million
Ohio
• Projected improper payment rate: 13.7 percent
• Projected overpayments: $1.79 billion
New Jersey
• Projected improper payment rate: 13.7 percent
• Projected overpayments: $1.78 billion
Mississippi
• Projected improper payment rate: 13.7 percent
• Projected overpayments: $528.6 million
California
• Projected improper payment rate: 13.6 percent
• Projected overpayments: $4.5 billion
Pennsylvania
• Projected improper payment rate: 13.6 percent
• Projected overpayments: $1.94 billion
Washington, D.C.
• Projected improper payment rate: 13.4 percent
• Projected overpayments: $86.3 million
New Hampshire
• Projected improper payment rate: 13.4 percent
• Projected overpayments: $241 million
Nevada
• Projected improper payment rate: 13.1 percent
• Projected overpayments: $289.1 million
South Carolina
• Projected improper payment rate: 12.8 percent
• Projected overpayments: $797.3 million
Florida
• Projected improper payment rate: 12.7 percent
• Projected overpayments: $3.45 billion
Virginia
• Projected improper payment rate: 12.3 percent
• Projected overpayments: $992 million