Y37
Non-Billable

Military operations

Non-Billable / Non-Specific Code

What is Military operations?

ICD-10-CM Y37 is the diagnosis code for Military operations. This code falls under the section "Legal intervention, operations of war, military operations, and terrorism" within Chapter 20 — External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

⛔ Excludes1

Coding Guidelines for Y37

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as Y37. They are mutually exclusive:

  • military aircraft involved in aircraft accident with civilian aircraft (V97.81-)
  • military vehicles involved in transport accident with civilian vehicle (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)
  • military watercraft involved in water transport accident with civilian watercraft (V94.81-)
  • war operations (Y36.-)

ICD-10-CM Code Hierarchy

Understanding where Y37 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 10 entries
Y37.0Military operations involving explosion of marine weaponsNon-BillableY37.00Military operations involving explosion of unspecified marine weaponNon-BillableY37.000Military operations involving explosion of unspecified marine weapon, military personnelBillableY37.001Military operations involving explosion of unspecified marine weapon, civilianBillableY37.01Military operations involving explosion of depth-chargeNon-BillableY37.010Military operations involving explosion of depth-charge, military personnelBillableY37.011Military operations involving explosion of depth-charge, civilianBillableY37.02Military operations involving explosion of marine mineNon-BillableY37.020Military operations involving explosion of marine mine, military personnelBillableY37.021Military operations involving explosion of marine mine, civilianBillableY37.03Military operations involving explosion of sea-based artillery shellNon-BillableY37.030Military operations involving explosion of sea-based artillery shell, military personnelBillableY37.031Military operations involving explosion of sea-based artillery shell, civilianBillableY37.04Military operations involving explosion of torpedoNon-BillableY37.040Military operations involving explosion of torpedo, military personnelBillableY37.041Military operations involving explosion of torpedo, civilianBillableY37.05Military operations involving accidental detonation of onboard marine weaponsNon-BillableY37.050Military operations involving accidental detonation of onboard marine weapons, military personnelBillableY37.051Military operations involving accidental detonation of onboard marine weapons, civilianBillableY37.09Military operations involving explosion of other marine weaponsNon-BillableY37.090Military operations involving explosion of other marine weapons, military personnelBillableY37.091Military operations involving explosion of other marine weapons, civilianBillableY37.1Military operations involving destruction of aircraftNon-BillableY37.10Military operations involving unspecified destruction of aircraftNon-BillableY37.100Military operations involving unspecified destruction of aircraft, military personnelBillableY37.101Military operations involving unspecified destruction of aircraft, civilianBillableY37.11Military operations involving destruction of aircraft due to enemy fire or explosivesNon-BillableY37.110Military operations involving destruction of aircraft due to enemy fire or explosives, military personnelBillableY37.111Military operations involving destruction of aircraft due to enemy fire or explosives, civilianBillableY37.12Military operations involving destruction of aircraft due to collision with other aircraftNon-BillableY37.120Military operations involving destruction of aircraft due to collision with other aircraft, military personnelBillableY37.121Military operations involving destruction of aircraft due to collision with other aircraft, civilianBillableY37.13Military operations involving destruction of aircraft due to onboard fireNon-BillableY37.130Military operations involving destruction of aircraft due to onboard fire, military personnelBillableY37.131Military operations involving destruction of aircraft due to onboard fire, civilianBillableY37.14Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosivesNon-BillableY37.140Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnelBillableY37.141Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilianBillableY37.19Military operations involving other destruction of aircraftNon-BillableY37.190Military operations involving other destruction of aircraft, military personnelBillableY37.191Military operations involving other destruction of aircraft, civilianBillableY37.2Military operations involving other explosions and fragmentsNon-BillableY37.20Military operations involving unspecified explosion and fragmentsNon-BillableY37.200Military operations involving unspecified explosion and fragments, military personnelBillableY37.201Military operations involving unspecified explosion and fragments, civilianBillableY37.21Military operations involving explosion of aerial bombNon-BillableY37.210Military operations involving explosion of aerial bomb, military personnelBillableY37.211Military operations involving explosion of aerial bomb, civilianBillableY37.22Military operations involving explosion of guided missileNon-BillableY37.220Military operations involving explosion of guided missile, military personnelBillableY37.221Military operations involving explosion of guided missile, civilianBillableY37.23Military operations involving explosion of improvised explosive device [IED]Non-BillableY37.230Military operations involving explosion of improvised explosive device [IED], military personnelBillableY37.231Military operations involving explosion of improvised explosive device [IED], civilianBillableY37.24Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch deviceNon-BillableY37.240Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnelBillableY37.241Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilianBillableY37.25Military operations involving fragments from munitionsNon-BillableY37.250Military operations involving fragments from munitions, military personnelBillableY37.251Military operations involving fragments from munitions, civilianBillableY37.26Military operations involving fragments of improvised explosive device [IED]Non-BillableY37.260Military operations involving fragments of improvised explosive device [IED], military personnelBillableY37.261Military operations involving fragments of improvised explosive device [IED], civilianBillableY37.27Military operations involving fragments from weaponsNon-BillableY37.270Military operations involving fragments from weapons, military personnelBillableY37.271Military operations involving fragments from weapons, civilianBillableY37.29Military operations involving other explosions and fragmentsNon-BillableY37.290Military operations involving other explosions and fragments, military personnelBillableY37.291Military operations involving other explosions and fragments, civilianBillableY37.3Military operations involving fires, conflagrations and hot substancesNon-BillableY37.30Military operations involving unspecified fire, conflagration and hot substanceNon-BillableY37.300Military operations involving unspecified fire, conflagration and hot substance, military personnelBillableY37.301Military operations involving unspecified fire, conflagration and hot substance, civilianBillableY37.31Military operations involving gasoline bombNon-BillableY37.310Military operations involving gasoline bomb, military personnelBillableY37.311Military operations involving gasoline bomb, civilianBillableY37.32Military operations involving incendiary bulletNon-BillableY37.320Military operations involving incendiary bullet, military personnelBillableY37.321Military operations involving incendiary bullet, civilianBillableY37.33Military operations involving flamethrowerNon-BillableY37.330Military operations involving flamethrower, military personnelBillableY37.331Military operations involving flamethrower, civilianBillableY37.39Military operations involving other fires, conflagrations and hot substancesNon-BillableY37.390Military operations involving other fires, conflagrations and hot substances, military personnelBillableY37.391Military operations involving other fires, conflagrations and hot substances, civilianBillableY37.4Military operations involving firearm discharge and other forms of conventional warfareNon-BillableY37.41Military operations involving rubber bulletsNon-BillableY37.410Military operations involving rubber bullets, military personnelBillableY37.411Military operations involving rubber bullets, civilianBillableY37.42Military operations involving firearms pelletsNon-BillableY37.420Military operations involving firearms pellets, military personnelBillableY37.421Military operations involving firearms pellets, civilianBillableY37.43Military operations involving other firearms dischargeNon-BillableY37.430Military operations involving other firearms discharge, military personnelBillableY37.431Military operations involving other firearms discharge, civilianBillableY37.44Military operations involving unarmed hand to hand combatNon-BillableY37.440Military operations involving unarmed hand to hand combat, military personnelBillableY37.441Military operations involving unarmed hand to hand combat, civilianBillableY37.45Military operations involving combat using blunt or piercing objectNon-BillableY37.450Military operations involving combat using blunt or piercing object, military personnelBillableY37.451Military operations involving combat using blunt or piercing object, civilianBillableY37.46Military operations involving intentional restriction of air and airwayNon-BillableY37.460Military operations involving intentional restriction of air and airway, military personnelBillableY37.461Military operations involving intentional restriction of air and airway, civilianBillableY37.47Military operations involving unintentional restriction of air and airwayNon-BillableY37.470Military operations involving unintentional restriction of air and airway, military personnelBillableY37.471Military operations involving unintentional restriction of air and airway, civilianBillableY37.49Military operations involving other forms of conventional warfareNon-BillableY37.490Military operations involving other forms of conventional warfare, military personnelBillableY37.491Military operations involving other forms of conventional warfare, civilianBillableY37.5Military operations involving nuclear weaponsNon-BillableY37.50Military operations involving unspecified effect of nuclear weaponNon-BillableY37.500Military operations involving unspecified effect of nuclear weapon, military personnelBillableY37.501Military operations involving unspecified effect of nuclear weapon, civilianBillableY37.51Military operations involving direct blast effect of nuclear weaponNon-BillableY37.510Military operations involving direct blast effect of nuclear weapon, military personnelBillableY37.511Military operations involving direct blast effect of nuclear weapon, civilianBillableY37.52Military operations involving indirect blast effect of nuclear weaponNon-BillableY37.520Military operations involving indirect blast effect of nuclear weapon, military personnelBillableY37.521Military operations involving indirect blast effect of nuclear weapon, civilianBillableY37.53Military operations involving thermal radiation effect of nuclear weaponNon-BillableY37.530Military operations involving thermal radiation effect of nuclear weapon, military personnelBillableY37.531Military operations involving thermal radiation effect of nuclear weapon, civilianBillableY37.54Military operation involving nuclear radiation effects of nuclear weaponNon-BillableY37.540Military operation involving nuclear radiation effects of nuclear weapon, military personnelBillableY37.541Military operation involving nuclear radiation effects of nuclear weapon, civilianBillableY37.59Military operation involving other effects of nuclear weaponsNon-BillableY37.590Military operation involving other effects of nuclear weapons, military personnelBillableY37.591Military operation involving other effects of nuclear weapons, civilianBillableY37.6Military operations involving biological weaponsNon-BillableY37.6XMilitary operations involving biological weaponsNon-BillableY37.6X0Military operations involving biological weapons, military personnelBillableY37.6X1Military operations involving biological weapons, civilianBillableY37.7Military operations involving chemical weapons and other forms of unconventional warfareNon-BillableY37.7XMilitary operations involving chemical weapons and other forms of unconventional warfareNon-BillableY37.7X0Military operations involving chemical weapons and other forms of unconventional warfare, military personnelBillableY37.7X1Military operations involving chemical weapons and other forms of unconventional warfare, civilianBillableY37.9Other and unspecified military operationsNon-BillableY37.90Military operations, unspecifiedBillableY37.91Military operations involving unspecified weapon of mass destruction [WMD]BillableY37.92Military operations involving friendly fireBillableY37.ABlast overpressure in military operationsNon-BillableY37.A1Low level blast overpressure in military operationsBillableY37.A2High level blast overpressure in military operationsBillable
Related Codes

Frequently Asked Questions

Is Y37 a billable ICD-10-CM code?

No, Y37 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does Y37 mean?

Y37 is the ICD-10-CM diagnosis code for "Military operations". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is Y37 in?

Y37 is located in Section Y35-Y38 — "Legal intervention, operations of war, military operations, and terrorism" within Chapter 20 of the ICD-10-CM Tabular List.

What are the sub-codes of Y37?

Y37 has 10 sub-code(s) that provide more specific detail: Y37.0, Y37.1, Y37.2, Y37.3, Y37.4 and more.

When should I use Y37?

Use Y37 when the patients documented diagnosis matches "Military operations" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Military operations?

The ICD-10-CM code for Military operations is Y37.

Can Y37 be used for primary diagnosis?

No, Y37 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is Y37 in?

Y37 is in Chapter 20 of the ICD-10-CM Tabular List.

What conditions are excluded from Y37?

Type 1 Excludes for Y37 include: military aircraft involved in aircraft accident with civilian aircraft (V97.81-); military vehicles involved in transport accident with civilian vehicle (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81); military watercraft involved in water transport accident with civilian watercraft (V94.81-) and more.

Is Y37 valid for 2026?

Yes, Y37 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousY36.A2High level blast overpressure in war operationsNext →Y37.0Military operations involving explosion of marine weapons
Code Details
Y37
Military operations
Non-Billable / Non-Specific Code
20 — External causes of morbidity (V00-Y99)
Y35-Y38 — Legal intervention, operations of war, military operations, and terrorism
2026 ICD-10-CM