Why AI Agents Change the Governance Model for HIEs

Most AI governance frameworks assume a single enterprise: one identity system, one risk owner, and one set of data-use policies. Health information exchanges break that assumption. An agent operating inside an HIE may act on behalf of, or interact with, multiple independent covered entities in the course of a single workflow, and each of those entities retains its own legal and regulatory obligations for the data it holds.

That structural difference changes governance requirements in four ways. Agent identity has to be scoped per participating organization rather than per deployment, so a single agent instance can carry distinct permissions for each entity it interacts with. Runtime enforcement has to evaluate least-privilege and permitted-purpose rules at the moment of each tool call, not just at session start, because one agent session can touch data governed by different organizations' policies. Audit logging has to capture data lineage across organizational boundaries rather than within one system. And accountability for agent behavior has to be shared across participating covered entities rather than resting with a single risk owner.