What is the federally established system that enables the transfer of electronic health records between agencies?

The Health Information Exchange (HIE) is the correct choice as it refers to the system that facilitates the transfer of electronic health records among various healthcare agencies. HIEs are designed to promote interoperability between different health information systems, enabling healthcare providers to share patient information securely and efficiently. This capability is crucial for coordinating care, improving patient outcomes, and enhancing the overall efficiency of healthcare services by preventing duplicate testing and ensuring that providers have access to necessary patient information.

In contrast, Health Information Systems (HIS) typically refer to systems that manage and store health information but may not specifically address the inter-agency exchange aspect. The Electronic Health Database (EHD) does not represent an established system recognized at the federal level for transferring records. Similarly, the Patient Record Network (PRN) is not a widely recognized or standardized system in the context of national or federal health information exchange initiatives. The HIE is the only option that accurately describes the federally established framework for sharing electronic health records.