NFIRS 5.0 Element: ‘Human Factors’ – Fire

Définition : The human condition or situation that allowed the heat source and combustible material to combine to ignite the fire.
Purpose : Combined with Cause of Ignition and Factors Contributing to Ignition, this element explains how and why the fire started. It can also indicate whether a fire is potentially preventable through public education, code enforcement, or other strategies.
Entry : Check or mark all applicable boxes. If age was a factor, enter the estimated age of the person involved in the space provided. If known, the gender of the person involved should also be checked or marked. If there were no known human factors contributing to ignition, check or mark the None box.

Element Specification

 Specification   Value 
Requirement Optional
Expected Length 1
Multiple Choice 0 – 8
Element Type Coded Field – The coded field relating to an entry in the code table. Most coded fields allow for Plus+ One codes. For these fields the expected length of the coded entry is depicted as (National length OR Plus+ One length). Only fields with this notation in the expected length column allow for Plus+ One definitions. If the user has not provided information, an empty field should be transmitted.


Here are the NFIRS codes for the ‘Human Factors’ element

Human Factors  Code 
Asleep, No Known Impairment 1
Unconscious 2
Possibly Impaired By Alcohol 3
Possibly Impaired By Other Drug or Chemical 4
Possibly Mentally Disabled 5
Physically Disabled 6
Physically Restrained 7
Unattended or Unsupervised Person 8
None N

Relational Edit Rules for ‘Human Factors’

NFIRS defines relational edit rules to ensure data consistency and accuracy in its database. These are the rules for ‘Human Factors’.

Rule Group  Overview 
Relational Edit Rule 57 relational edit rule 57.
Relational Edit Rule 58 Not on Exposures.

Transactions containing ‘Human Factors’

The value of this element is captured by the following transaction :

Need more NFIRS help?

Here are some other useful ressources to learn more about NFIRS.

NFIRS Codes Cheat SheetNFIRS CodingNFIRS ExamplesFDIDsPOCsNFIRS TransactionsNFIRS ModulesNFIRS ElementsNFIRS RulesNFIRS ReferenceNFIRS Compliant ?

You can also read this NFIRS 5.0 Complete Reference Guide, and NFIRS 5.0 Design Documentation in order to have a deeper understanding of NFIRS 5.0. Here are also NFIRS 5.0 Forms ready for you to download and use.

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Last Updated on May 2, 2023