Comparison of Da Vinci Health Record Exchange (HRex) with US-Core
| US Realm | Current Build | Difference | Notes | 
| ValueSets | |||
| Language codes with language and optionally a region modifier | Common Languages | Comparison | 2 Breaking Changes, 0 Changes, 69 Notes | 
| StructureDefinitions | |||
| US Core Patient Profile | HRex Patient Demographics | Comparison | 2 Breaking Changes, 10 Changes, 15 Notes |