National Institute for Standards and Technology (NIST) page for Clinical Document Architecture (CDA) and Continuity of Care Document (CCD) standards validation
"CONNECT is an open source software and community that promotes IT interoperability in the U.S. healthcare system. CONNECT enables secure electronic health data exchange among healthcare providers, insurers, government agencies and consumer services."
NLM is the central coordinating body for clinical terminology standards within the Department of Health and Human Services (HHS). NLM works closely with the Office of the National Coordinator for Health Information Technology (ONC) to ensure NLM's efforts are aligned with the goal of the President and HHS Secretary for the nationwide implementation of an interoperable health information technology infrastructure to improve the quality and efficiency of health care.
Consumer health information from the U.S. Department of Health and Human Services.
"Your source for reliable health information from the Federal government. Offering quick guides to healthy living, personalized health advice, and tips and tools to help you and those you care about stay healthy."