2027 ICD-10-CM Diagnosis Code Y37Military operations

ICD-10-CM Codes›V01–Y99›Y35-Y38›Y37

ICD-10-CM Y37
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Y37 is a non-billable ICD-10-CM category code for military operations, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Y37.000A, Y37.000D, Y37.000S, and Y37.001A.

Code Identity

ICD-10-CM Code
Y37
Billable Status
No — Non-Billable Category
Code Describes
Military operations
Short Description
Military operations
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
CategoryY37Military operations
This CodeY37Military operations

Specific Coding for Military operationsOverview

Non-specific codes like Y37 require more characters. Use one of these billable codes instead:

  • Y37.0 for Military operations involving explosion of marine weapons

  • Y37.00 for Military operations involving explosion of unspecified marine weapon

  • Y37.01 for Military operations involving explosion of depth-charge

  • Y37.02 for Military operations involving explosion of marine mine

  • Y37.03 for Military operations involving explosion of sea-based artillery shell

  • Y37.04 for Military operations involving explosion of torpedo

  • Y37.05 for Military operations involving accidental detonation of onboard marine weapons

  • Y37.09 for Military operations involving explosion of other marine weapons

  • Y37.1 for Military operations involving destruction of aircraft

  • Y37.10 for Military operations involving unspecified destruction of aircraft

  • Y37.11 for Military operations involving destruction of aircraft due to enemy fire or explosives

  • Y37.12 for Military operations involving destruction of aircraft due to collision with other aircraft

  • Y37.13 for Military operations involving destruction of aircraft due to onboard fire

  • Y37.14 for Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives

  • Y37.19 for Military operations involving other destruction of aircraft

  • Y37.2 for Military operations involving other explosions and fragments

  • Y37.20 for Military operations involving unspecified explosion and fragments

  • Y37.21 for Military operations involving explosion of aerial bomb

  • Y37.22 for Military operations involving explosion of guided missile

  • Y37.23 for Military operations involving explosion of improvised explosive device [IED]

  • Y37.24 for Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device

  • Y37.25 for Military operations involving fragments from munitions

  • Y37.26 for Military operations involving fragments of improvised explosive device [IED]

  • Y37.27 for Military operations involving fragments from weapons

  • Y37.29 for Military operations involving other explosions and fragments

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

  • Y37.30 for Military operations involving unspecified fire, conflagration and hot substance

  • Y37.31 for Military operations involving gasoline bomb

  • Y37.32 for Military operations involving incendiary bullet

  • Y37.33 for Military operations involving flamethrower

  • Y37.39 for Military operations involving other fires, conflagrations and hot substances

  • Y37.4 for Military operations involving firearm discharge and other forms of conventional warfare

  • Y37.41 for Military operations involving rubber bullets

  • Y37.42 for Military operations involving firearms pellets

  • Y37.43 for Military operations involving other firearms discharge

  • Y37.44 for Military operations involving unarmed hand to hand combat

  • Y37.45 for Military operations involving combat using blunt or piercing object

  • Y37.46 for Military operations involving intentional restriction of air and airway

  • Y37.47 for Military operations involving unintentional restriction of air and airway

  • Y37.49 for Military operations involving other forms of conventional warfare

  • Y37.5 for Military operations involving nuclear weapons

  • Y37.50 for Military operations involving unspecified effect of nuclear weapon

  • Y37.51 for Military operations involving direct blast effect of nuclear weapon

  • Y37.52 for Military operations involving indirect blast effect of nuclear weapon

  • Y37.53 for Military operations involving thermal radiation effect of nuclear weapon

  • Y37.54 for Military operation involving nuclear radiation effects of nuclear weapon

  • Y37.59 for Military operation involving other effects of nuclear weapons

  • Y37.6 for Military operations involving biological weapons

  • Y37.6X for Military operations involving biological weapons

  • Y37.7 for Military operations involving chemical weapons and other forms of unconventional warfare

  • Y37.7X for Military operations involving chemical weapons and other forms of unconventional warfare

  • Y37.9 for Other and unspecified military operations

  • Y37.90 for Military operations, unspecified

  • Y37.91 for Military operations involving unspecified weapon of mass destruction [WMD]

  • Y37.92 for Military operations involving friendly fire

  • Y37.A for Blast overpressure in military operations

  • Y37.A1 for Low level blast overpressure in military operations

  • Y37.A2 for High level blast overpressure in military operations

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Y37: 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 occurring during peacetime on military property and during routine military exercises and operations

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 Y37
Values for category Y37 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 Y37, its category, or a range that includes it.

Excludes1 8

These codes carry an Excludes1 note naming Y37: 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.-)
  • Y36 Operations of war
    injury to military personnel occurring during peacetime military operations (Y37.-)

Patient EducationClinical

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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 Y37Overview

What is the ICD-10 code for military operations?

Y37 is the ICD-10-CM category for military operations, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Y37 (Military operations) a billable code?

No. This is a category header that groups the codes for military operations, and headers cannot be submitted on claims. Claims for military operations need a more specific code from this category, such as Y37.000A, Y37.000D, and Y37.000S.

Can Y37 be reported with a code from V97.81?

Not as a rule. The Excludes1 note on Y37 lists "military aircraft involved in aircraft accident with civilian aircraft (V97.81-)". 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).