American National Standards Institute (ANSI)
http://www.ansi.org

Centers for Medicare and Medicaid Services (CMS)
http://www.cms.hhs.gov

Compliance Guidance
http://www.oig.hhs.gov/fraud/complianceguidance.html

Department of Health and Human Services (HHS)
http://www.hhs.gov

Healthcare Billing and Management Association (HBMA)
http://hbma.org

Medicare
http://www.medicare.gov

National Committee on Vital and Health Statistics (NCVHS)
http://www.ncvhs.hhs.gov

Office of The Inspector General
http://www.oig.hhs.gov