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The Orange County Medical Emergency Data System electronic Patient Care Reporting (OC-MEDS PCRS) is the countywide EMS information system used to track patient care events from the request for emergency medical and ambulance services through transport and transfer of patient care to a receiving facility. The system is compliant with current standards as defined by the National EMS Information System (NEMSIS), the California EMS Information System (CEMSIS), and the OC-MEDS Data Dictionary (OCEMS Policy 300.31)

OCEMS also supports providers' utilization of their own patient care reporting systems. Pursuant to California State Statute (§1797.227) and local OCEMS Policies (300.10, 300.20, 300.30): All EMS providers must utilize an electronic Patient Care Reporting System (PCRS) that is certified by NEMSIS as compliant with the current version, certified by OCEMS as compliant with current statewide CEMSIS data standards and OCEMS policies. EMS providers' PCRS's must also sustain real time patent care documentation and communication in connection with OC-MEDS as specified in OCEMS Policy. Please contact OCEMS via email at for further information.


NEMSIS PCRS Certification

NEMSIS Data Dictionary

CEMSIS State Website

CEMSIS Technical Specifications

OCEMS Policies (300.10, 300.20, 300.30)

OCEMS Data Dictionary (300.31)

OC-MEDS PCRS User Module