The US government is the leader in generation of acronyms beginning with radar, AWOL, and SNAFU and now HCFA, NIH, FDA, HHS, and NLRB. Greenberg and Stern3 suggest that a beginner level of acronyms includes an understanding of such terms as DNA, HIV, MRI, and NIH. Intermediates will understand CAD, MI, NSAID, CDC, and AHA. For advanced standing, you must deal with HCFA, TPA, ADH, ODC, ARA, MIS, and APSAG.