CMS changes for 2009.
D014487:Centers for Medicare and Medicaid Services, U.S. / Q000191:economics / Q000331:legislation & jurisprudence; D055695:Electronic Prescribing / Q000191:economics; D006801:Humans; D008484:Medicaid / Q000191:economics; D016345:Medicare Part B / Q000191:economics; D014481:United States