IIS Assessment Aggregate Status Report - Patient Matching - HL7

A key role of immunization information systems (IIS) is combining vaccination records from many sources to create complete and accurate histories. To do this well, IIS need data from most immunizers in their area, sent through standardized electronic channels. For over 20 years, the IIS community has used messaging standards, which have become even more important with the rise of electronic health record (EHR) integration. As data is electronically exchanged, IIS must attempt to match incoming patient records from a provider with existing records already in their database. Additionally, when IIS are queried for a patient’s immunization records, they must accurately locate an existing IIS patient’s record using the supplied query parameters. This can be challenging when the demographic information varies between an IIS and an EHR from the same patient’s record.