Y37.3Military operations involving fires, conflagrations and hot substances

Y37.3 is the ICD-10-CM diagnosis code for military operations involving fires, conflagrations and hot substances. It belongs to category Y37 (military operations), 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 Y37 (military operations), Y37.3 is specifically for military operations involving fires, conflagrations and hot substances. Related codes cover involving explosion of marine weapons (Y37.0), involving destruction of aircraft (Y37.1), involving other explosions and fragments (Y37.2), involving firearm discharge and other forms of conventional warfare (Y37.4), involving nuclear weapons (Y37.5), involving biological weapons (Y37.6), involving chemical weapons and other forms of unconventional warfare (Y37.7), other and unspecified military operations (Y37.9) and 1 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 Y37.3 together with the conditions in its Excludes1 note: military operations involving fires and conflagrations aboard military aircraft (Y37.1-), military operations involving fires and conflagrations aboard military watercraft (Y37.0-), military operations involving fires and conflagrations caused indirectly by conventional weapons (Y37.2-) and military 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.