The next bed could cost you a lot if the hospital says you're there on observation. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Back in 2006, President Bush and Health and Human Services Secretary Michael Leavitt talked with reporters during a trip to Florida, where Bush spoke to volunteers helping seniors sign up for the Medicare prescription drug benefit. Mike Stocker/AP hide caption

itoggle caption Mike Stocker/AP

They're back: Cheaper mail-order medications from Canada and other foreign lands. iStockphoto.com hide caption

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A billboard advertising robotic surgery hangs outside Boston's Fenway Park in 2009. Hospitals and doctors have heavily promoted robotic surgery. Charles Krupa/AP hide caption

itoggle caption Charles Krupa/AP

How does the doctor decide what to write on the prescription pad? iStockphoto.com hide caption

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Patients wait in line at Nuestra Clinica Del Valle in San Juan, Texas, in September 2012 file photo. A study released on Wednesday finds that immigrants, particularly noncitizens, heavily subsidize Medicare, and that policies that restrict immigration may deplete Medicare's financial resources. Eric Gay/AP hide caption

itoggle caption Eric Gay/AP

Average hospital charges for a major joint replacement, such as an artificial hip, vary widely, as this map from the federal Centers for Medicare & Medicaid Services shows. HHS hide caption

itoggle caption HHS

Seniors in the Southeast were much more likely to be prescribed more than one high-risk medications in 2009. Danya Qato and Amal Trivedi/Alpert Medical School, Brown University hide caption

itoggle caption Danya Qato and Amal Trivedi/Alpert Medical School, Brown University

President Obama's budget plan for fiscal year 2014 may include a proposal for Medicare patients to pay more of their own medical bills. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP