. . "Centers for Medicare & Medicaid Services (U.S.)" . . . "CMS needs an approach and a reliable cost estimate for removing social security numbers from Medicare cards"@en . "Removal of SSNs from Medicare cards"@en . "Medicare CMS needs an approach and a reliable cost estimate for removing social security numbers from Medicare cards : report to congressional requesters"@en . . . . . . . "Guidebooks"@en . . . . "Medicare"@en . . . "Rules"@en . . . .