Data Dictionaries & XSD
The NEMSIS Standard provides a dataset and XSD that can be implemented by an EMS system. National data elements are defined as those that should be collected for the National EMS Database, but additional data elements can be considered for use at the state and local levels determined by each state or local EMS system's need.
For more resources about version changes please go to the NEMSIS standard resources page.
NEMSIS Version 3.5.1.250115
Data Dictionary (v3.5.1):
v3.5.1 Change Log (pdf)
Dataset Schemas (v3.5.1):
v3 DEM/EMS/State XSDs (zip)
v3 EMS (PCR/Event) API (web)
v3 DEM API (web)
v3 State API (web)
Additional Documents (v3.5.1):
v3 Element Details (txt)
NEMSIS Version 3.5.0.230317CP4
Data Dictionary (v3.5.0):
v3.5.0 Change Log (pdf)
Dataset Schemas (v3.5.0):
v3 DEM/EMS/State XSDs (zip)
v3 EMS (PCR/Event) API (web)
v3 DEM API (web)
v3 State API (web)
Additional Documents (v3.5.0):
v3 Element Details (txt)
NEMSIS Version 3.4.0.200910CP2
NEMSIS Version 3 Archive
Previous versions of the NEMSIS standard can be found on the NEMSIS “Archive” page
