Immunization Information Systems (IIS) have been around for more than twenty years. Their functionality, completeness, and usefulness have all increased over this time. IIS and electronic health record (EHR) systems have always had unique features, as well as some overlapping features, and the deployment of EHRs has enhanced the local immunization capabilities of clinician practices. Several critical clinical features that are considered to be core functions of IIS are beginning to be supported by EHRs.
IIS and EHR Feature Overlap, originally published in 2014, reviews and discusses five such critical features. The paper offers insight into the likelihood and implications of their migration from IIS to EHR, and offers recommendations to both the IIS and EHR communities for how to thoughtfully guide this migration. The proliferation of EHR with funding from the CMS EHR Incentive Programs has in some cases exacerbated the feature overlap. Both IIS and EHR projects should consider wisely investments in these functional areas, considering the potential for overlap as well as the on-hand expertise to develop, support these feature.