Centers for Medicare & Medicaid Services (CMS) - Medicare Advantage (Part C)
High-priority program
Program level Payment Integrity results
Sponsoring agency: Department of Health and Human Services
Under the Medicare Advantage Program, also known as Medicare Part C, beneficiaries can opt to receive their Medicare benefits through a private health plan. Approximately half of all Medicare beneficiaries are enrolled in Medicare Advantage plans. The primary causes of overpayments are medical record discrepancies and insufficient documentation. Medicare Advantage Organizations are responsible for collecting and maintaining the documentation necessary to validate the data used in payment determinations. Medical records are not submitted to the agency at the time of making payment determinations.
View on Federal Program InventoryPROGRAM METRICS
$388,717 M
in FY 2025 outlays, with a
93.9%
payment accuracy rate
-
Improper payment estimates over time
View as:
Chart toggle amounts:Proper paymentsOverpaymentUnderpaymentTechnically improperUnknown
Payment Integrity results
-
FY 2025 improper payment estimates
Chart legend and breakdown
Payment accuracy rate
Improper payment rate
Unknown payment rate
Sampling & estimation methodology details
Sampling timeframe:
01/2023 - 12/2023
Confidence interval:
95% to <100%
Margin of error:
+/-0.69
Causes
| Overpayment root cause | Overpayment amount |
|---|---|
| Amount of overpayments within the agency's control | $0.0 M |
| Amount of overpayments outside the agency's control | $21,434.34 M |
| Amount of overpayments that occurred because the data/information needed to validate payment accuracy prior to making a payment does not exist | $0.0 M |
| Amount of overpayments that occurred because of an inability to access the data/information needed to validate payment accuracy prior to making a payment | $0.0 M |
| Amount of overpayments that occurred because of a failure to access data/information needed to validate payment accuracy prior to making a payment | $21,434.34 M |
| Underpayment root cause | Underpayment amount |
|---|---|
| Amount of underpayments | $2,230.78 M |
| The amount of underpayments that occurred because the data/information needed to validate payment accuracy prior to making a payment does not exist | $0.0 M |
| The amount of underpayments that occurred because of an inability to access the data/information needed to validate payment accuracy prior to making a payment | $0.0 M |
| The amount of underpayments that occurred because of a failure to access data/information needed to validate payment accuracy prior to making a payment | $2,230.78 M |
| The amount of improper payments that were paid to the right recipient for the correct amount but were considered technically improper because of failure to follow statute or regulation | $0.0 M |
| The amount that could either be proper or improper but the agency is unable to determine whether it was proper or improper as a result of insufficient or lack of documentation | $0.0 M |
Prevention
HHS continues to prioritize and implement effective corrective actions and mitigation strategies that reduce improper payments. The actions taken and planned to address the root causes of error, failure to access data, are proportional to the amount of improper payments in the Medicare Advantage program. Contract-level RADV audits are HHS's primary strategy to recover Part C overpayments. RADV uses medical record reviews to confirm the accuracy of diagnoses submitted by Medicare Advantage Organizations (MAOs) for risk-adjusted payments. HHS also performs audits of MAOs to detect non-compliance with program integrity requirements, which can lead to additional improper payments. HHS also maintained formal outreach to MAOs for incomplete or invalid documentation to address potential improper payments during the sample submission period. HHS also plans to develop a Part C strategy.
| Payment type | Mitigation strategies taken | Mitigation strategies planned |
|---|---|---|
| Overpayments | Audit, Training | Audit, Training |
| Underpayments | Audit, Training | Audit, Training |
| Eligibility element/information needed | Description of the eligbility element/information |
|---|---|
| Medical Status | Identifies whether a person is sick/healthy |
Additional information
The Reporting Year (RY) 2025 Medicare Part C improper payment rate is statistically similar to the RY 2024 Medicare Part C improper payment rate.
Reduction target
6.43 %A tolerable rate has not been established for this program. The tolerable rate will be identified when the methodology is developed. Once the tolerable rate is developed, the agency can determine if we have what is needed with respect to internal controls, human capital and information system and other infrastructure to reduce Improper Payments and Unknown Payments to the tolerable rate.
To establish and maintain payment integrity internal controls in HHS included the following program integrity proposals in its FY 2027 Budget request:
- Expand Tools to Identify and Investigate Fraud in the Medicare Advantage Program
HHS reports the agency’s improper payment targets annually in the AFR. In addition, HHS sets annual Government Performance and Results Act (GPRA) goals tied to reducing the improper payments. HHS executive officials are held accountable for assessing improper payment rates and taking meaningful steps to address the root causes of error. These efforts are reflected in each executive’s performance plan, as appropriate. HHS also reports quarterly on the specific actions taken to address the improper payment rates through the quarterly scorecard process for high-priority programs, providing a level of public oversight over these efforts.