2027 ICD-10-CM Diagnosis Code Y36Operations of war

ICD-10-CM Codes›V01–Y99›Y35-Y38›Y36

ICD-10-CM Y36
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Y36 is a non-billable ICD-10-CM category code for operations of war, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Y36.000A, Y36.000D, Y36.000S, and Y36.001A.

Code Identity

ICD-10-CM Code
Y36
Billable Status
No — Non-Billable Category
Code Describes
Operations of war
Short Description
Operations of war
Same as the full description in the CMS dataset.
Chapter
Y35-Y38
Legal intervention, operations of war, military operations, and terrorism

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionY35-Y38Legal intervention, operations of war, military operations, and terrorism
CategoryY36Operations of war
This CodeY36Operations of war

Specific Coding for Operations of warOverview

Non-specific codes like Y36 require more characters. Use one of these billable codes instead:

  • Y36.0 for War operations involving explosion of marine weapons

  • Y36.00 for War operations involving explosion of unspecified marine weapon

  • Y36.01 for War operations involving explosion of depth-charge

  • Y36.02 for War operations involving explosion of marine mine

  • Y36.03 for War operations involving explosion of sea-based artillery shell

  • Y36.04 for War operations involving explosion of torpedo

  • Y36.05 for War operations involving accidental detonation of onboard marine weapons

  • Y36.09 for War operations involving explosion of other marine weapons

  • Y36.1 for War operations involving destruction of aircraft

  • Y36.10 for War operations involving unspecified destruction of aircraft

  • Y36.11 for War operations involving destruction of aircraft due to enemy fire or explosives

  • Y36.12 for War operations involving destruction of aircraft due to collision with other aircraft

  • Y36.13 for War operations involving destruction of aircraft due to onboard fire

  • Y36.14 for War operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives

  • Y36.19 for War operations involving other destruction of aircraft

  • Y36.2 for War operations involving other explosions and fragments

  • Y36.20 for War operations involving unspecified explosion and fragments

  • Y36.21 for War operations involving explosion of aerial bomb

  • Y36.22 for War operations involving explosion of guided missile

  • Y36.23 for War operations involving explosion of improvised explosive device [IED]

  • Y36.24 for War operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device

  • Y36.25 for War operations involving fragments from munitions

  • Y36.26 for War operations involving fragments of improvised explosive device [IED]

  • Y36.27 for War operations involving fragments from weapons

  • Y36.29 for War operations involving other explosions and fragments

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

  • Y36.30 for War operations involving unspecified fire, conflagration and hot substance

  • Y36.31 for War operations involving gasoline bomb

  • Y36.32 for War operations involving incendiary bullet

  • Y36.33 for War operations involving flamethrower

  • Y36.39 for War operations involving other fires, conflagrations and hot substances

  • Y36.4 for War operations involving firearm discharge and other forms of conventional warfare

  • Y36.41 for War operations involving rubber bullets

  • Y36.42 for War operations involving firearms pellets

  • Y36.43 for War operations involving other firearms discharge

  • Y36.44 for War operations involving unarmed hand to hand combat

  • Y36.45 for War operations involving combat using blunt or piercing object

  • Y36.46 for War operations involving intentional restriction of air and airway

  • Y36.47 for War operations involving unintentional restriction of air and airway

  • Y36.49 for War operations involving other forms of conventional warfare

  • Y36.5 for War operations involving nuclear weapons

  • Y36.50 for War operations involving unspecified effect of nuclear weapon

  • Y36.51 for War operations involving direct blast effect of nuclear weapon

  • Y36.52 for War operations involving indirect blast effect of nuclear weapon

  • Y36.53 for War operations involving thermal radiation effect of nuclear weapon

  • Y36.54 for War operation involving nuclear radiation effects of nuclear weapon

  • Y36.59 for War operation involving other effects of nuclear weapons

  • Y36.6 for War operations involving biological weapons

  • Y36.6X for War operations involving biological weapons

  • Y36.7 for War operations involving chemical weapons and other forms of unconventional warfare

  • Y36.7X for War operations involving chemical weapons and other forms of unconventional warfare

  • Y36.8 for War operations occurring after cessation of hostilities

  • Y36.81 for Explosion of mine placed during war operations but exploding after cessation of hostilities

  • Y36.82 for Explosion of bomb placed during war operations but exploding after cessation of hostilities

  • Y36.88 for Other war operations occurring after cessation of hostilities

  • Y36.89 for Unspecified war operations occurring after cessation of hostilities

  • Y36.9 for Other and unspecified war operations

  • Y36.90 for War operations, unspecified

  • Y36.91 for War operations involving unspecified weapon of mass destruction [WMD]

  • Y36.92 for War operations involving friendly fire

  • Y36.A for Blast overpressure in war operations

  • Y36.A1 for Low level blast overpressure in war operations

  • Y36.A2 for High level blast overpressure in war operations

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Y36: its own notes plus those printed at Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

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

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

Notes

General instructions on how these codes are used.

From Chapter 20 (V00-Y99) External causes of morbidity and mortality applies to 7,461 codes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category Y36
Values for category Y36 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Y36, its category, or a range that includes it.

Excludes1 9

These codes carry an Excludes1 note naming Y36: they are not reported together with it, unless the two conditions are unrelated.

  • V91 Other injury due to accident to watercraft
    military watercraft accident in military or war operations (Y36, Y37.-)
  • V92 Drowning and submersion due to accident on board watercraft, without accident to watercraft
    military watercraft accident in military or war operations (Y36, Y37)
  • V93 Other injury due to accident on board watercraft, without accident to watercraft
    military watercraft accident in military or war operations (Y36, Y37.-)
  • V94 Other and unspecified water transport accidents
    military watercraft accidents in military or war operations (Y36, Y37)
  • Block V95-V97 Air and space transport accidents
    military aircraft accidents in military or war operations (Y36, Y37)
  • Block W20-W49 Exposure to inanimate mechanical forces
    exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
  • W49 Exposure to other inanimate mechanical forces
    exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
  • Block X92-Y09 Assault
    injuries due to operations of war (Y36.-)
  • Y37 Military operations
    war operations (Y36.-)

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Y36Overview

What is the ICD-10 code for operations of war?

Y36 is the ICD-10-CM category for operations of war, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Y36 (Operations of war) a billable code?

No. This is a category header that groups the codes for operations of war, and headers cannot be submitted on claims. Claims for operations of war need a more specific code from this category, such as Y36.000A, Y36.000D, and Y36.000S.

Can Y36 be reported with a code from Y37?

Not as a rule. The Excludes1 note on Y36 lists "injury to military personnel occurring during peacetime military operations (Y37.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).