USCDI: US Core Data for Interoperability
USCDI is the ONC-defined standardized set of health data classes and elements that certified EHRs must support for interoperable exchange. Updated annually; the floor for federal interoperability requirements.
USCDI version progression
USCDI is published annually by the Office of the National Coordinator for Health IT. Each version is finalized via comment process and adopted by reference in the ONC Cures Act Final Rule certification criteria. v1 (2020), v2, v3, v4, and v5 have all been published; the version mandated for certification advances on a schedule.
Data classes covered
- Patient Demographics, Care Team Members
- Allergies and Intolerances, Medications, Immunizations
- Problems, Procedures, Vital Signs, Laboratory, Diagnostic Imaging
- Clinical Notes, Smoking Status, Goals, Health Concerns, Health Status
- Encounter Information, Provenance, Patient Summary
- Newer versions add: Diagnostic Imaging, SDOH data, Sexual Orientation/Gender Identity (SOGI), Health Insurance Information
Why USCDI matters for analytics
USCDI defines what data any certified EHR must be able to share. Analytics platforms that lean on USCDI-defined classes work with any certified EHR without custom modeling. Vendors that depend on EHR-specific extensions outside USCDI are vulnerable to changes in any one EHR's implementation.
Where Vizier fits
Vizier's connector data model maps to USCDI classes as the baseline. EHR-specific extensions (Epic Clarity tables, Cerner CCL outputs, etc.) layer on top where needed. The USCDI floor means the analytics layer works against any certified EHR with predictable semantics.