CLIF Data Dictionary Change Log
Track the evolution of the Common Longitudinal ICU data Format (CLIF) through its version history. This change log documents all updates, improvements, and structural changes to the data dictionary.
Version 2.1.0 (October 2025)
Data Structure Updates
- Move Code Status, CRRT therapy, ECMO MCS, Hospital Diagnosis, Medication Administered Intermittent, Microbiology Culture, Micro non-culture, and Patient Procedures to Beta status
- Finalize patient language category mCIDE – Issue#13
- Finalize hospitalization admission_type_category mCIDE – Issue#16
- Add LTACH to hospital_type mCIDE – Issue#78
- Revision to Micro culture mCIDE for LOINC compatibility – Issue#25
- Finalize patient language category mCIDE – Issue#13
- Add ADT location type field with finalized mCIDE – Issue#39, Issue#64
- Addition of device_id to respiratory_support Issue#67
Version 2.0.0 (February 2025) Current Version
Major ERD Upgrade
- Combined patient and hospitalization tables for improved data structure
- Introduced maturity concept for ERD and tables (Beta, Concept, Future)
- Added comprehensive Beta tables with production-ready structures
- Defined concept tables for future implementation
- Standardized mCIDE (minimum Common ICU Data Elements) across all tables
- Standardized all datetime variables to be time zone aware with UTC format (Issue #40)
- Revision to Micro culture mCIDE for LOINC compatibility – Issue#25
Note: This version represents a major restructuring of the CLIF data format with significant improvements to standardization and interoperability across institutions.
Version 1.0.0
First official release of the Common Longitudinal ICU data Format (CLIF)
- Initial table structure definitions
- Core entity-relationship model
- Foundation for multi-institutional critical care data standardization