The Office of the National Coordinator for Health Information Technology (ONC) has published a draft version 2 of the United States Core Data for Interoperability (USCDI). The USCDI establishes a baseline set of data to be exchanged across care settings. Version 1 of the USCDI was adopted as part of the ONC’s 21st Century Cures Act final rule published on May 1, 2020. The USCDI is incorporated into the certification standards for electronic health technology, and also is significant for application of the information blocking prohibition. Information blocking is a practice of a developer of certified health information technology, a health care provider, or health information exchange that interferes with access, exchange or use of electronic health information (EHI). Before October 6, 2022, EHI covered by the information blocking prohibition is limited to the data elements included in the USCDI.

Version 1 of the USCI includes 15 data classes:

  • Allergies and Intolerances
  • Assessment and Plan of Treatment
  • Care Team Members
  • Clinical Notes
  • Health Concerns
  • Immunizations
  • Laboratory
  • Medications
  • Patient Demographics
  • Procedures
  • Problems
  • Provenance
  • Smoking Status
  • Unique Device Identifiers for a Patient’s Implantable Devices
  • Vital Signs

Version 2 would add two new data classes: Diagnostic Imaging and Encounter Information. Version 2 would also add new data elements under the data classes for Care Team Members and Diagnostic Imaging.