The HHS Office of Inspector General (OIG) recently issued a report examining implementation of Medicaid National Correct Coding Initiative (NCCI) edits, as required by the Affordable Care Act since October, 2010.  The report finds that several problems have limited the success of these edits (medically unlikely edits and procedure-to-procedure edits), which are designed to encourage accurate provider coding and consequently reduce improper Medicaid payments.  For instance, 10 states had not fully implemented the edits, and most (47) did not use all of the edits correctly.  The OIG recommends that CMS undertake a number of corrective actions to bring about full implementation of the NCCI edits and ensure their correct usage in all states.  These actions include providing oversight and technical assistance to state Medicaid agencies relating to use of the edits, issuing guidance to states on how to estimate and properly report on NCCI cost savings, and examining the merits of using the edits under managed care.  For details, see the full report, “Inconsistencies in State Implementation of Correct Coding Edits May Allow Improper Medicaid Payments.”