No, other IT systems that act as data sources and are not intended to perform required capabilities in accordance with adopted certification criteria do not need to be certified simply because they supply data to a Complete EHR or EHR Module. Obviously, if the other IT systems have not been developed to, and cannot, perform required capabilities in accordance with adopted certification criteria then certification of those other IT systems would not be available. For the purposes of certification, an EHR technology developer must be able to demonstrate to an ONC-ATCB or ONC-ACB that its Complete EHR or EHR Module can perform the capabilities specified by all applicable certification criteria. Thus, in circumstances where the Complete EHR or EHR Module is designed to be implemented in multiple ways, including the ability to receive data from a different IT system, the EHR technology developer would need to demonstrate during testing that regardless of the source from which the Complete EHR or EHR Module receives data, it is compliant with all applicable certification criteria for which certification has been sought.