Y36.300A War operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter

Billable ICD-10-CM code, FY2026.

Built from Y36.300 with 7th character A (initial encounter).

Applies from Y36 Operations of war

Includes

• injuries to military personnel and civilians caused by war, civil insurrection, and peacekeeping missions

Excludes1 (never code together)

• injury to military personnel occurring during peacetime military operations (Y37.-)
• military vehicles involved in transport accidents with non-military vehicle during peacetime (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)

7th character note

• The appropriate 7th character is to be added to each code from category Y36

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

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

Applicable to

• War operations involving smoke, fumes, and heat from fires, conflagrations and hot substances

Excludes1 (never code together)

• 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-)
• war operations involving fires and thermal effects of nuclear weapons (Y36.53-)

Code annotations containing back-references to Y36.300A

Back-references to Y36.3

• Type 1 Excludes: Y36.7 War operations involving chemical weapons and other forms of unconventional warfare ("war operations involving incendiary devices (Y36.3-, Y36.5-)")
• Type 1 Excludes: Y37.7 Military operations involving chemical weapons and other forms of unconventional warfare ("military operations involving incendiary devices (Y36.3-, Y36.5-)")

Back-references to Y36

• Type 1 Excludes: V91 Other injury due to accident to watercraft ("military watercraft accident in military or war operations (Y36, Y37.-)")
• Type 1 Excludes: V92 Drowning and submersion due to accident on board watercraft, without accident to watercraft ("military watercraft accident in military or war operations (Y36, Y37)")
• Type 1 Excludes: V93 Other injury due to accident on board watercraft, without accident to watercraft ("military watercraft accident in military or war operations (Y36, Y37.-)")
• Type 1 Excludes: V94 Other and unspecified water transport accidents ("military watercraft accidents in military or war operations (Y36, Y37)")
• Type 1 Excludes: W49 Exposure to other inanimate mechanical forces ("exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)")
• Type 1 Excludes: Y37 Military operations ("war operations (Y36.-)")

Nearby codes

• Y36.291D War operations involving other explosions and fragments, civilian, subsequent encounter
• Y36.291S War operations involving other explosions and fragments, civilian, sequela
• Y36.3 War operations involving fires, conflagrations and hot substances
• Y36.30 War operations involving unspecified fire, conflagration and hot substance
• Y36.300 War operations involving unspecified fire, conflagration and hot substance, military personnel
• Y36.300A War operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter (this code)
• Y36.300D War operations involving unspecified fire, conflagration and hot substance, military personnel, subsequent encounter
• Y36.300S War operations involving unspecified fire, conflagration and hot substance, military personnel, sequela
• Y36.301 War operations involving unspecified fire, conflagration and hot substance, civilian
• Y36.301A War operations involving unspecified fire, conflagration and hot substance, civilian, initial encounter
• Y36.301D War operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter