On June 18, 2010, the Office of National Coordinator for Health IT issued a final rule, 45 CFR Part 170, establishing a temporary EHR certification program for the purposes of testing and certifying health information technology.
The National Coordinator will utilize the temporary certification program to authorize organizations to test and certify Complete Electronic Health Records (EHRs) and/or EHR Modules, thereby making Certified EHR
Technology available prior to the date on which health care providers seeking incentive payments available under the Medicare and Medicaid EHR Incentive Programs may begin demonstrating meaningful use of Certified EHR Technology.
You can find the new final rule here.
You can find ONC's "Fact Sheet" and Q&A regarding certification here.