Y36.231A War operations involving explosion of improvised explosive device [IED], civilian, initial encounter

Billable ICD-10-CM code, FY2026.

Built from Y36.231 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 Y36.2 War operations involving other explosions and fragments

Excludes1 (never code together)

• war operations involving explosion of aircraft (Y36.1-)
• war operations involving explosion of marine weapons (Y36.0-)
• war operations involving explosion of nuclear weapons (Y36.5-)
• war operations involving explosion occurring after cessation of hostilities (Y36.8-)

Applies from Y36.23 War operations involving explosion of improvised explosive device [IED]

Applicable to

• War operations involving explosion of person-borne improvised explosive device [IED]
• War operations involving explosion of vehicle-borne improvised explosive device [IED]
• War operations involving explosion of roadside improvised explosive device [IED]

Code annotations containing back-references to Y36.231A

Back-references to Y36.2

• Type 1 Excludes: W40 Explosion of other materials ("explosion involving military or war operations (Y36.0-, Y36.2-)")
• Type 1 Excludes: W40.8 Explosion of other specified explosive materials ("explosion involving military or war operations (Y36.0-, Y36.2-)")
• Type 1 Excludes: X96.0 Assault by antipersonnel bomb ("antipersonnel bomb use in military or war (Y36.2-)")
• Type 1 Excludes: Y36.3 War operations involving fires, conflagrations and hot substances ("war operations involving fires and conflagrations caused indirectly by conventional weapons (Y36.2-)")

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

• Y36.230 War operations involving explosion of improvised explosive device [IED], military personnel
• Y36.230A War operations involving explosion of improvised explosive device [IED], military personnel, initial encounter
• Y36.230D War operations involving explosion of improvised explosive device [IED], military personnel, subsequent encounter
• Y36.230S War operations involving explosion of improvised explosive device [IED], military personnel, sequela
• Y36.231 War operations involving explosion of improvised explosive device [IED], civilian
• Y36.231A War operations involving explosion of improvised explosive device [IED], civilian, initial encounter (this code)
• Y36.231D War operations involving explosion of improvised explosive device [IED], civilian, subsequent encounter
• Y36.231S War operations involving explosion of improvised explosive device [IED], civilian, sequela
• Y36.24 War operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device
• Y36.240 War operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnel
• Y36.240A War operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnel, initial encounter