County of San Diego Local Emergency Medical Services Information System (CoSD LEMSIS)

County of San Diego LEMSIS

CoSD LEMSIS is the no-cost, cloud-based data collection system that manages:

NERIS Update for LEMSIS Users

As of midnight (0:00) January 1, 2026, the National Emergency Response Information System (NERIS) has launched as the new national fire reporting data standard, replacing the National Fire Incident Reporting System (NFIRS).

Below are a few reminders to ensure a smooth transition:

• All agencies are using Auto NERIS from CAD workflow which means incidents are automatically created and should be accessed by navigating to Incidents > View Existing NERIS Fire.
• Agency administrators can build custom Configurable List Views for display columns and sorting as needed by clicking Agency Name > Configuration > Configurable List Views.
• If any issues are found with validation rules preventing a 100 score, please contact the LEMSIS Administrator by email or Elite messaging.
• When users are finished with a NERIS fire incident, navigate to the Menu at the bottom of the incident and select "Finish Incident" once validation reaches 100%.

For agencies interested in adopting the integrated ImageTrend EMS/Fire reporting process should notify the LEMSIS Administrator to request transition support or ask any questions.

LEMSIS Elite administrators can find additional information in the Elite University (navigate to Community > Help/University > NERIS Transition). 

Note: NFIRS incidents are due by 1/31/26

How to Migrate to LEMSIS Elite for EMS Agencies

Agencies that desire to migrate to LEMSIS Elite should submit an “Agency Information Update” form in the LEMSIS Licensing Portal.  Requirements described on the form, such as most up-to-date vehicles, must be complete.  Agencies submitting the Agency Information Update form will be contacted within 10 business days to discuss implementation plans.

LEMSIS ePCR Technical Information

The Schematron documents allowable LEMSIS fields, formats, and rules for San Diego County ePCR forms. The Schematron also includes adopted values for fields with defined options (i.e., dropdown or multi-select).  These options are coded in the Schematron. 

The Data Dictionary defines the Schematron codes to text values and labels. The Data Dictionary contains ALL fields and field values contained in the entire national library; there are many more fields in the Data Dictionary than are used in the San Diego County ePCR form/Schematron. The allowable field value list for some fields is too long to include in the Schematron (medications, cause of injury codes, etc.).  These lists can be found in subsequent tabs in the Data Dictionary.

Agency administrators and information technology vendors are recommended to begin integration efforts with the Schematron, and not the Data Dictionary.

Additional information may be found at the California EMS Information System (CEMSIS) site and the National EMS Information System (NEMSIS) repository. 

Please see the NEMSIS 3.5 Data Dictionary and the NEMSIS 3.4 Data Dictionary for further information.