The National Fire Incident Reporting System (NFIRS) is a voluntary reporting standard that fire departments use to uniformly report on the full range of their activities, from fire to emergency medical services to severe weather and natural disasters.
100-Fire Group
200-Rupture/Explosion
300-Rescue/EMS
400-Hazardous Condition
500-Service Call
600-Good Intent
700-False Alarm & False Call
800-Severe Weather & Natural Disaster
900-Special Incident