Recommendation: The Administrator of CMS should expand its review of states' implementation of the provider screening and enrollment requirements to include states that have not made use of CMS's optional consultations. Similar to CMS's contractor site visits, such reviews should include any necessary steps to address areas of noncompliance for all types of enrolled providers, including those under contract with managed care organizations. (Recommendation 1)

Agency: Department of Health and Human Services: Centers for Medicare and Medicaid Services
Status: Open
Priority recommendation

Comments: CMS concurred with our recommendation. In February 2020, CMS told us that it plans to reach out to states that have not yet participated in its optional consultations to discuss their progress towards implementing provider screening and enrollment requirements, and outline steps that the states should take to come into full compliance with them. In order to fully address this recommendation CMS would need to review all states' implementation of the provider screening and enrollment requirements, including states that have not made use of CMS's optional consultations. As such, this recommendation remains open until CMS provides evidence that it has assessed the compliance of all states; we will continue to monitor CMS's progress.

Recommendation: The Administrator of CMS should annually monitor progress toward addressing any areas of noncompliance related to the provider screening and enrollment requirements for any state with one or more corrective action plans. (Recommendation 2)

Agency: Department of Health and Human Services: Centers for Medicare and Medicaid Services
Status: Open

Comments: As of February 2020, HHS officials have not informed us of any actions taken to implement this recommendation. We will update the status of this recommendation when we receive additional information

Recommendation: To ensure states have appropriate and current guidance to assist them in designing and administering Medicaid NEMT, the Secretary of HHS should direct CMS to assess current Medicaid NEMT guidance and update that guidance as needed.

Agency: Department of Health and Human Services
Status: Open

Comments: As of July 2019, HHS officials reported that they are waiting for a policy decision from leadership concerning non-emergency medical transportation. GAO will continue to monitor and update the status of this recommendation.

Recommendation: To help ensure appropriate payments to MA plans, the Administrator of CMS should take steps to improve the accuracy of the adjustment made for differences in diagnostic coding practices between MA and Medicare FFS. Such steps could include, for example, accounting for additional beneficiary characteristics, including the most current data available, identifying and accounting for all years of coding differences that could affect the payment year for which an adjustment is made, and incorporating the trend of the impact of coding differences on risk scores.

Agency: Department of Health and Human Services: Centers for Medicare and Medicaid Services
Status: Open
Priority recommendation

Comments: CMS indicated in January 2020 that it has no plans to take further action regarding our recommendation. CMS stated that, given the complexity of measuring coding changes attributable to plan behavior and the difficulty of measuring countervailing factors, there is not a single correct factor within the viable range of adjustment factors. In addition, the agency noted that there is policy discretion with respect to the appropriate adjustment factor for the payment year. In the Medicare Advantage Call Letter of April 2019, CMS stated that it will apply the statutory minimum adjustment of 5.90 percent for calendar year 2020. As of February 2020, CMS had not provided any documentation of its analysis and the basis for its determination. Although the application of the 5.90 percent adjustment and other recent changes CMS has made to its methodology for calculating the diagnostic coding adjustment (i.e., the exclusion of diagnosis codes that were differentially reported in Medicare fee-for-service and Medicare Advantage) likely brings CMS's adjustment closer to what GAO's analysis projects to be an accurate adjustment, a modified methodology that incorporates more recent data, accounts for all relevant years of coding differences, and incorporates the effect of coding difference trends would better ensure an accurate adjustment in future years. Until CMS shows the sufficiency of the diagnostic coding adjustment or implements an adjustment based on analysis using an updated methodology, payments to Medicare Advantage plans may not accurately account for differences in diagnostic coding between these plans and traditional Medicare providers.