According to a new ACA-mandated OIG report, "Part D Plans Generally Cover Drugs Commonly Used By Dual Eligibles," Part D plan formularies on average include 96% of the 191 drugs commonly used by dual eligible beneficiaries (those that quality for both Medicare and Medicaid). Moreover, 90% of dual eligibles are enrolled in Part D plans with formularies that include at least 90% of the commonly-used drugs. Part D plans vary in the extent to which they apply utilization management tools to the drugs commonly used by dual eligibles. The OIG did not make any related recommendations.