The HHS Office of Inspector General (OIG) has issued a report entitled “MedicaidPayments for Outpatient Clinical Diagnostic Laboratory Services for Dual-Eligible Beneficiaries.” The OIG found that Medicaid programs in 8 of 11 selected states spent a total of $1.3 million in potential improper payments for clinical diagnostic laboratory services that were provided on an assignment-related basis to Medicare/Medicaid dual eligibles in FY 2005 and 2006. Over half of the potential improper payments identified corresponded to five Current Procedural Terminology codes (36415, 85025, 80053, 81000, and 87536). The OIG points out that state Medicaid programs should not pay for any portion of outpatient clinical diagnostic laboratory services that were provided on an assignment-related basis to dual eligibles who are enrolled in Medicare Part B.