Y36.3War operations involving fires, conflagrations and hot substances

Y36.3 is the ICD-10-CM diagnosis code for war operations involving fires, conflagrations and hot substances. It belongs to category Y36 (operations of war), block Y35-Y38 (legal intervention, operations of war, military operations, and terrorism) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within Y36 (operations of war), Y36.3 is specifically for war operations involving fires, conflagrations and hot substances. Related codes cover war operations involving explosion of marine weapons (Y36.0), war operations involving destruction of aircraft (Y36.1), war operations involving other explosions and fragments (Y36.2), war operations involving firearm discharge and other forms of conventional warfare (Y36.4), war operations involving nuclear weapons (Y36.5), war operations involving biological weapons (Y36.6), war operations involving chemical weapons and other forms of unconventional warfare (Y36.7), war operations occurring after cessation of hostilities (Y36.8) and 2 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Don't report Y36.3 together with the conditions in its Excludes1 note: war operations involving fires and conflagrations aboard military aircraft (Y36.1-), war operations involving fires and conflagrations aboard military watercraft (Y36.0-), war operations involving fires and conflagrations caused indirectly by conventional weapons (Y36.2-) and war operations involving fires and thermal effects of nuclear weapons (Y36.53-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.