??? ??? ??? EHR System expands to include all functions related to the EHR; these functions will be such things as billing and claims support, decision support, various reporting functions ??? ??? ??? History of EHR-S/IOM Michael Leavitt, Secretary of HHS, requested the IOM committee take a couple of days to define an initial set of functions that would be required as part of an EHR-S to provide v