Chart 4. The Five Most Costly Conditions as a Percentage of Total Health Expenditures: United States, 2002 Research in Action, Issue 19 Source: Olin GL, Rhoades JA. The five most costly medical conditions, 1997 and 2002: estimates for the U.S. civilian noninstitutionalized population. Statistical Brief #80. Agency for Healthcare Research and Quality, Rockville, MD. Web site: http://meps.ahrq.gov/mepsweb/data_files/publications/st80/stat80.pdf. Accessed April 7, 2006.Return to Document Current as of June 2006 Internet Citation: Chart 4. The Five Most Costly Conditions as a Percentage of Total Health Expenditures: United States, 2002: Research in Action, Issue 19. June 2006. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/factsheets/costs/expriach/expriach4.html