Objective: Develop requirements, designs, prototypes, and tools to:

• make individual OHDSI vocabularies more approachable
• facilitate understanding of OHDSI's vocabularies and concepts, relationships between them, and their prevelance in a specific CDM
• facilitate translation from individual source concepts for cohort or phenotype definition and for ETL work
• facilitate development or translation of concept sets
• provide tools and interface for classification/granularity selection in other contexts (e.g., patient profiles)

Project Lead: Sigfried Gold

Start Date: January 31, 2017

**Notes and Documentation: ** Workgroup Notes Page Google Doc