Assessing the Usability of Encounter Data for Enrollees in Comprehensive Managed Care Across MAX 2007-2009

This brief informs researchers and policymakers on the availability and usability of encounter data for Medicaid managed care. It builds on previous reviews of MAX 2007 and 2008 encounter data by evaluating the MAX 2009 physician, outpatient and clinic services, inpatient hospital services, and prescription drug services encounter data. The analysis found that, in many states, data quality improved from 2007 to 2009.