The American Recovery and Reinvestment Act of 2009 emphasizes the need for the U.S. to move toward the use of electronic health records. To encourage a more widespread adoption of interoperable health information technology, the legislation calls for the Office of the National Coordinator (ONC) for Health IT, in consultation with NIST, to recognize a program for the voluntary certification of health information technology as being in compliance with applicable certification criteria to meet defined meaningful use requirements. In collaboration with ONC, NIST is developing the necessary functional and conformance testing requirements, test cases, and test tools in support of the health IT certification program.