Congressional Research Service The Library of CongressCRS Report for CongressReceived through the CRS WebOrder Code RL31966Overview of the Medicare Prescription Drug, Improvement, and Modernization Act of 2003Updated December 6, 2004Jennifer OSullivan, name redacted, name redacted, Jennifer Boulanger, and Paulette MorganSpecialists and Analyst in Social LegislationDomestic Social Policy Division