A comprehensive medication review (CMR) is a medication therapy management (MTM) service designed to systematically collect and assess patient medication information and identify medication therapy problems (MTPs) to develop a care plan for resolution. To ensure Medicare Part D plans are actively engaging in annual CMRs, the Centers for Medicare & Medicaid Services (CMS) added the PQA measure, Completion Rate for CMR, to the Medicare Part D Star Ratings Program. This measure assesses the annual percentage of completed CMRs for eligible beneficiaries.