Version 3 Data Dictionaries & XSD
The NEMSIS/NHTSA Version 3 Dataset provide 596 data elements 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 should be considered for use at the state and local levels depending on each state or local EMS system’s need.
For more resources about version changes please go to the list of resources page.
NEMSIS Version 3.5.1.240923 Candidate Release 1
This is not in production yet – scroll down for current NEMSIS v3.5.0 information
Data Dictionary (v3.5.1):
Attention EMS Stakeholders:
You have from September 23, 2024, to November 4, 2024, to submit corrections for Iteration 1. After this period, our development team will work on implementing the corrections.
Following this, there will be another review period from November 19, 2024, to December 11, 2024 with final issue submissions due no later than December 11, 2024.
Thank you for your attention to these timelines!
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
Dataset Schemas (v3.4.0):
v3 DEM/EMS/State XSDs (zip)
Additional Documents (v3.4.0):
v3 Element Details (txt)
NEMSIS Version 3 Archive
Previous versions of the NEMSIS Version 3 standard can be found on the NEMSIS Version 3 Downloads “Archive” page
