Where can I find out about the health insurance benefits the members of U.S. Congress receive?

Is there a website? Exactly what kind of coverage do they receive and what are the premiums?
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Members of Congress receive their health benefits under the Federal Employees Health Benefits Program (FEHBP) which is administered by the Office of Personnel Management (OPM). You can find out more by going to this site: http://www.opm.gov/insure/health/
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