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OKEMSIS (Oklahoma Emergency Medical Service Information System) 

Mandatory Database for all EMS Providers in Oklahoma
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The new OKEMSIS v3.3.4 Data Dictionary is now available to all EMS agencies.  A timeline for conversion is linked here along with the Validation Rules and State EMS Run Form that correlates with the v3.3.4 Data Dictionary.  The State database will also be upgraded to the Elite ImageTrend version 3 product during the conversion timeline.  Click here for a list of computer/system requirements for the Elite database.  If you have any questions about the OKEMSIS v3.3.4 Data Dictionary please send them to MartinL@health.ok.gov or call Emergency Systems at (405)271-4027.   

Free OKEMSIS Elite Database trainings have now been scheduled on a regional basis.  A list of training locations and times can be found here.

As of 4-7-2015 the timeline for conversion to OKEMSIS v3.3.4 has been updated.  EMS Providers/Vendors need to adjust their conversion timelines accordingly for Oklahoma.

As of 5-29-2015 the OKEMSIS v3.3.4 Data Dictionary has been updated. A list of updates to the Data Dictionary can be found here.

OKEMSIS Elite v3.3.4 Schematron file now available (Change extension from .txt to .sch when downloading.)

NOTE: Time line for conversion to OKEMSIS v3.3.4 is subject to change by OSDH personnel if significant issues arise with the OKEMSIS ELITE database (state site) during the testing phase.


Since 2002, OAC 310:641-3-160 has required all EMS agencies to submit data about all ambulance responses to the Oklahoma EMS Database. This database has been a great success, growing to nearly 2 million runs with quality and completeness improving steadily. 

The need for better national EMS data has led to the establishment of the National EMS information system (NEMSIS). The majority of all states are participating in this effort.  The pre-2009 Oklahoma EMS Database was developed before NEMSIS, and used an older data collection and storage format. In order to submit data as required, Oklahoma has changed to a NEMSIS-compliant database purchased with grant funding through the Oklahoma Highway Safety Office.

Providers submit data to the website one run at a time, or in "batches".  "Batch" submitters will need to work with their data vendors to ensure they have a compatible download format. Most vendors have already developed NEMSIS-compliant download formats, and will need to add only the "Oklahoma-specific" data fields to be fully compliant. Formats can be tested at the OKEMSIS website:

Effective January 1, 2009, Oklahoma EMS providers must collect all required data fields as shown on the 2008 Oklahoma Patient Care Report (PCR).  All providers must begin submitting their data to the new database by February 28, 2009.

Few things are as important to the future of EMS as good data.  We need to be able to show that our work makes a demonstrable difference in patient outcomes.  Thanks in advance for your cooperation as we complete this important step in the development of EMS as a profession.

Both Regional and Individual Agency training is available. Please contact MartinL@health.ok.gov to schedule your training.

OKEMSIS EMS Service Call Summary and Trend Analysis 2009-2013

OKEMSIS Data Report 2009-2013 Slide Show

For questions contact: Martin Lansdale, Epidemiologist: Martinl@health.ok.gov


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