ICD-10-CM Code Y36.4

War operations involving firearm discharge and other forms of conventional warfare

Version 2020 Non-Billable Code

Not Valid for Submission

Y36.4 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of war operations involving firearm discharge and other forms of conventional warfare. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:Y36.4
Short Description:War op involving firearm discharge and oth conventl warfare
Long Description:War operations involving firearm discharge and other forms of conventional warfare

Consider the following ICD-10 codes with a higher level of specificity:

  • Y36.41 - War operations involving rubber bullets
  • Y36.410 - War operations involving rubber bullets, military personnel
  • Y36.410A - War operations involving rubber bullets, military personnel, initial encounter
  • Y36.410D - War operations involving rubber bullets, military personnel, subsequent encounter
  • Y36.410S - War operations involving rubber bullets, military personnel, sequela
  • Y36.411 - War operations involving rubber bullets, civilian
  • Y36.411A - War operations involving rubber bullets, civilian, initial encounter
  • Y36.411D - War operations involving rubber bullets, civilian, subsequent encounter
  • Y36.411S - War operations involving rubber bullets, civilian, sequela
  • Y36.42 - War operations involving firearms pellets
  • Y36.420 - War operations involving firearms pellets, military personnel
  • Y36.420A - War operations involving firearms pellets, military personnel, initial encounter
  • Y36.420D - War operations involving firearms pellets, military personnel, subsequent encounter
  • Y36.420S - War operations involving firearms pellets, military personnel, sequela
  • Y36.421 - War operations involving firearms pellets, civilian
  • Y36.421A - War operations involving firearms pellets, civilian, initial encounter
  • Y36.421D - War operations involving firearms pellets, civilian, subsequent encounter
  • Y36.421S - War operations involving firearms pellets, civilian, sequela
  • Y36.43 - War operations involving other firearms discharge
  • Y36.430 - War operations involving other firearms discharge, military personnel
  • Y36.430A - War operations involving other firearms discharge, military personnel, initial encounter
  • Y36.430D - War operations involving other firearms discharge, military personnel, subsequent encounter
  • Y36.430S - War operations involving other firearms discharge, military personnel, sequela
  • Y36.431 - War operations involving other firearms discharge, civilian
  • Y36.431A - War operations involving other firearms discharge, civilian, initial encounter
  • Y36.431D - War operations involving other firearms discharge, civilian, subsequent encounter
  • Y36.431S - War operations involving other firearms discharge, civilian, sequela
  • Y36.44 - War operations involving unarmed hand to hand combat
  • Y36.440 - War operations involving unarmed hand to hand combat, military personnel
  • Y36.440A - War operations involving unarmed hand to hand combat, military personnel, initial encounter
  • Y36.440D - War operations involving unarmed hand to hand combat, military personnel, subsequent encounter
  • Y36.440S - War operations involving unarmed hand to hand combat, military personnel, sequela
  • Y36.441 - War operations involving unarmed hand to hand combat, civilian
  • Y36.441A - War operations involving unarmed hand to hand combat, civilian, initial encounter
  • Y36.441D - War operations involving unarmed hand to hand combat, civilian, subsequent encounter
  • Y36.441S - War operations involving unarmed hand to hand combat, civilian, sequela
  • Y36.45 - War operations involving combat using blunt or piercing object
  • Y36.450 - War operations involving combat using blunt or piercing object, military personnel
  • Y36.450A - War operations involving combat using blunt or piercing object, military personnel, initial encounter
  • Y36.450D - War operations involving combat using blunt or piercing object, military personnel, subsequent encounter
  • Y36.450S - War operations involving combat using blunt or piercing object, military personnel, sequela
  • Y36.451 - War operations involving combat using blunt or piercing object, civilian
  • Y36.451A - War operations involving combat using blunt or piercing object, civilian, initial encounter
  • Y36.451D - War operations involving combat using blunt or piercing object, civilian, subsequent encounter
  • Y36.451S - War operations involving combat using blunt or piercing object, civilian, sequela
  • Y36.46 - War operations involving intentional restriction of air and airway
  • Y36.460 - War operations involving intentional restriction of air and airway, military personnel
  • Y36.460A - War operations involving intentional restriction of air and airway, military personnel, initial encounter
  • Y36.460D - War operations involving intentional restriction of air and airway, military personnel, subsequent encounter
  • Y36.460S - War operations involving intentional restriction of air and airway, military personnel, sequela
  • Y36.461 - War operations involving intentional restriction of air and airway, civilian
  • Y36.461A - War operations involving intentional restriction of air and airway, civilian, initial encounter
  • Y36.461D - War operations involving intentional restriction of air and airway, civilian, subsequent encounter
  • Y36.461S - War operations involving intentional restriction of air and airway, civilian, sequela
  • Y36.47 - War operations involving unintentional restriction of air and airway
  • Y36.470 - War operations involving unintentional restriction of air and airway, military personnel
  • Y36.470A - War operations involving unintentional restriction of air and airway, military personnel, initial encounter
  • Y36.470D - War operations involving unintentional restriction of air and airway, military personnel, subsequent encounter
  • Y36.470S - War operations involving unintentional restriction of air and airway, military personnel, sequela
  • Y36.471 - War operations involving unintentional restriction of air and airway, civilian
  • Y36.471A - War operations involving unintentional restriction of air and airway, civilian, initial encounter
  • Y36.471D - War operations involving unintentional restriction of air and airway, civilian, subsequent encounter
  • Y36.471S - War operations involving unintentional restriction of air and airway, civilian, sequela
  • Y36.49 - War operations involving other forms of conventional warfare
  • Y36.490 - War operations involving other forms of conventional warfare, military personnel
  • Y36.490A - War operations involving other forms of conventional warfare, military personnel, initial encounter
  • Y36.490D - War operations involving other forms of conventional warfare, military personnel, subsequent encounter
  • Y36.490S - War operations involving other forms of conventional warfare, military personnel, sequela
  • Y36.491 - War operations involving other forms of conventional warfare, civilian
  • Y36.491A - War operations involving other forms of conventional warfare, civilian, initial encounter
  • Y36.491D - War operations involving other forms of conventional warfare, civilian, subsequent encounter
  • Y36.491S - War operations involving other forms of conventional warfare, civilian, sequela

Code Classification

  • External causes of morbidity and mortality (V01–Y98)
    • Legal intervention, operations of war, military operations, and terrorism (Y35-Y38)
      • Operations of war (Y36)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Veterans and Military Health

Military service members and veterans have made sacrifices to our country, and they face different health issues than civilians. During their service, they are at risk for various injuries. These injuries can happen during combat, while others involve physical stress to the body. Sometimes the injuries are life-threatening or serious enough to cause disability. Others may not be as serious, but can be painful and affect daily life. Specific types of injuries include

  • Shrapnel and gunshot wounds
  • Lost limbs
  • Head and brain injuries
  • Tinnitus and hearing loss, typically from exposure to noise
  • Sprains and strains
  • Limited range of motion, especially in ankles and knees

There may also be a risk of health problems from exposure to environmental hazards, such as contaminated water, chemicals, infections, and burn pits.

Being in combat and being separated from your family can be stressful. The stress can put service members and veterans at risk for mental health problems. These include anxiety, post-traumatic stress disorder, depression and substance abuse. Suicide can also be a concern.


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