ICD-10-CM Tabular Index · Chapter 20 · FY 2026 Y37
Military operations (Y37) ICD-10-CM
The Y37 code range covers military operations with 418 ICD-10-CM diagnosis codes. 273 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
418
Diagnosis Codes
273
Billable Codes
Y37
Code Range
Y35–Y38
Parent Section
Includes
This note appears immediately under a three character code title to further define, or give 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
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- 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
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category Y37
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
ICD-10-CM
Codes in the Y37 Range 418 codes · 273 billable
418 of 418 shown
- Y37 Military operationsNon-billable
- Y37.0 Military operations involving explosion of marine weaponsNon-billable
- Y37.00 Military operations involving explosion of unspecified marine weaponNon-billable
- Y37.000 Military operations involving explosion of unspecified marine weapon, military personnelNon-billable
- Y37.000A Military operations involving explosion of unspecified marine weapon, military personnel, initial encounter
- Y37.000D Military operations involving explosion of unspecified marine weapon, military personnel, subsequent encounter
- Y37.000S Military operations involving explosion of unspecified marine weapon, military personnel, sequela
- Y37.001 Military operations involving explosion of unspecified marine weapon, civilianNon-billable
- Y37.001A Military operations involving explosion of unspecified marine weapon, civilian, initial encounter
- Y37.001D Military operations involving explosion of unspecified marine weapon, civilian, subsequent encounter
- Y37.001S Military operations involving explosion of unspecified marine weapon, civilian, sequela
- Y37.01 Military operations involving explosion of depth-chargeNon-billable
- Y37.010 Military operations involving explosion of depth-charge, military personnelNon-billable
- Y37.010A Military operations involving explosion of depth-charge, military personnel, initial encounter
- Y37.010D Military operations involving explosion of depth-charge, military personnel, subsequent encounter
- Y37.010S Military operations involving explosion of depth-charge, military personnel, sequela
- Y37.011 Military operations involving explosion of depth-charge, civilianNon-billable
- Y37.011A Military operations involving explosion of depth-charge, civilian, initial encounter
- Y37.011D Military operations involving explosion of depth-charge, civilian, subsequent encounter
- Y37.011S Military operations involving explosion of depth-charge, civilian, sequela
- Y37.02 Military operations involving explosion of marine mineNon-billable
- Y37.020 Military operations involving explosion of marine mine, military personnelNon-billable
- Y37.020A Military operations involving explosion of marine mine, military personnel, initial encounter
- Y37.020D Military operations involving explosion of marine mine, military personnel, subsequent encounter
- Y37.020S Military operations involving explosion of marine mine, military personnel, sequela
- Y37.021 Military operations involving explosion of marine mine, civilianNon-billable
- Y37.021A Military operations involving explosion of marine mine, civilian, initial encounter
- Y37.021D Military operations involving explosion of marine mine, civilian, subsequent encounter
- Y37.021S Military operations involving explosion of marine mine, civilian, sequela
- Y37.03 Military operations involving explosion of sea-based artillery shellNon-billable
- Y37.030 Military operations involving explosion of sea-based artillery shell, military personnelNon-billable
- Y37.030A Military operations involving explosion of sea-based artillery shell, military personnel, initial encounter
- Y37.030D Military operations involving explosion of sea-based artillery shell, military personnel, subsequent encounter
- Y37.030S Military operations involving explosion of sea-based artillery shell, military personnel, sequela
- Y37.031 Military operations involving explosion of sea-based artillery shell, civilianNon-billable
- Y37.031A Military operations involving explosion of sea-based artillery shell, civilian, initial encounter
- Y37.031D Military operations involving explosion of sea-based artillery shell, civilian, subsequent encounter
- Y37.031S Military operations involving explosion of sea-based artillery shell, civilian, sequela
- Y37.04 Military operations involving explosion of torpedoNon-billable
- Y37.040 Military operations involving explosion of torpedo, military personnelNon-billable
- Y37.040A Military operations involving explosion of torpedo, military personnel, initial encounter
- Y37.040D Military operations involving explosion of torpedo, military personnel, subsequent encounter
- Y37.040S Military operations involving explosion of torpedo, military personnel, sequela
- Y37.041 Military operations involving explosion of torpedo, civilianNon-billable
- Y37.041A Military operations involving explosion of torpedo, civilian, initial encounter
- Y37.041D Military operations involving explosion of torpedo, civilian, subsequent encounter
- Y37.041S Military operations involving explosion of torpedo, civilian, sequela
- Y37.05 Military operations involving accidental detonation of onboard marine weaponsNon-billable
- Y37.050 Military operations involving accidental detonation of onboard marine weapons, military personnelNon-billable
- Y37.050A Military operations involving accidental detonation of onboard marine weapons, military personnel, initial encounter
- Y37.050D Military operations involving accidental detonation of onboard marine weapons, military personnel, subsequent encounter
- Y37.050S Military operations involving accidental detonation of onboard marine weapons, military personnel, sequela
- Y37.051 Military operations involving accidental detonation of onboard marine weapons, civilianNon-billable
- Y37.051A Military operations involving accidental detonation of onboard marine weapons, civilian, initial encounter
- Y37.051D Military operations involving accidental detonation of onboard marine weapons, civilian, subsequent encounter
- Y37.051S Military operations involving accidental detonation of onboard marine weapons, civilian, sequela
- Y37.09 Military operations involving explosion of other marine weaponsNon-billable
- Y37.090 Military operations involving explosion of other marine weapons, military personnelNon-billable
- Y37.090A Military operations involving explosion of other marine weapons, military personnel, initial encounter
- Y37.090D Military operations involving explosion of other marine weapons, military personnel, subsequent encounter
- Y37.090S Military operations involving explosion of other marine weapons, military personnel, sequela
- Y37.091 Military operations involving explosion of other marine weapons, civilianNon-billable
- Y37.091A Military operations involving explosion of other marine weapons, civilian, initial encounter
- Y37.091D Military operations involving explosion of other marine weapons, civilian, subsequent encounter
- Y37.091S Military operations involving explosion of other marine weapons, civilian, sequela
- Y37.1 Military operations involving destruction of aircraftNon-billable
- Y37.10 Military operations involving unspecified destruction of aircraftNon-billable
- Y37.100 Military operations involving unspecified destruction of aircraft, military personnelNon-billable
- Y37.100A Military operations involving unspecified destruction of aircraft, military personnel, initial encounter
- Y37.100D Military operations involving unspecified destruction of aircraft, military personnel, subsequent encounter
- Y37.100S Military operations involving unspecified destruction of aircraft, military personnel, sequela
- Y37.101 Military operations involving unspecified destruction of aircraft, civilianNon-billable
- Y37.101A Military operations involving unspecified destruction of aircraft, civilian, initial encounter
- Y37.101D Military operations involving unspecified destruction of aircraft, civilian, subsequent encounter
- Y37.101S Military operations involving unspecified destruction of aircraft, civilian, sequela
- Y37.11 Military operations involving destruction of aircraft due to enemy fire or explosivesNon-billable
- Y37.110 Military operations involving destruction of aircraft due to enemy fire or explosives, military personnelNon-billable
- Y37.110A Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel, initial encounter
- Y37.110D Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel, subsequent encounter
- Y37.110S Military operations involving destruction of aircraft due to enemy fire or explosives, military personnel, sequela
- Y37.111 Military operations involving destruction of aircraft due to enemy fire or explosives, civilianNon-billable
- Y37.111A Military operations involving destruction of aircraft due to enemy fire or explosives, civilian, initial encounter
- Y37.111D Military operations involving destruction of aircraft due to enemy fire or explosives, civilian, subsequent encounter
- Y37.111S Military operations involving destruction of aircraft due to enemy fire or explosives, civilian, sequela
- Y37.12 Military operations involving destruction of aircraft due to collision with other aircraftNon-billable
- Y37.120 Military operations involving destruction of aircraft due to collision with other aircraft, military personnelNon-billable
- Y37.120A Military operations involving destruction of aircraft due to collision with other aircraft, military personnel, initial encounter
- Y37.120D Military operations involving destruction of aircraft due to collision with other aircraft, military personnel, subsequent encounter
- Y37.120S Military operations involving destruction of aircraft due to collision with other aircraft, military personnel, sequela
- Y37.121 Military operations involving destruction of aircraft due to collision with other aircraft, civilianNon-billable
- Y37.121A Military operations involving destruction of aircraft due to collision with other aircraft, civilian, initial encounter
- Y37.121D Military operations involving destruction of aircraft due to collision with other aircraft, civilian, subsequent encounter
- Y37.121S Military operations involving destruction of aircraft due to collision with other aircraft, civilian, sequela
- Y37.13 Military operations involving destruction of aircraft due to onboard fireNon-billable
- Y37.130 Military operations involving destruction of aircraft due to onboard fire, military personnelNon-billable
- Y37.130A Military operations involving destruction of aircraft due to onboard fire, military personnel, initial encounter
- Y37.130D Military operations involving destruction of aircraft due to onboard fire, military personnel, subsequent encounter
- Y37.130S Military operations involving destruction of aircraft due to onboard fire, military personnel, sequela
- Y37.131 Military operations involving destruction of aircraft due to onboard fire, civilianNon-billable
- Y37.131A Military operations involving destruction of aircraft due to onboard fire, civilian, initial encounter
- Y37.131D Military operations involving destruction of aircraft due to onboard fire, civilian, subsequent encounter
- Y37.131S Military operations involving destruction of aircraft due to onboard fire, civilian, sequela
- Y37.14 Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosivesNon-billable
- Y37.140 Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnelNon-billable
- Y37.140A Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel, initial encounter
- Y37.140D Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel, subsequent encounter
- Y37.140S Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, military personnel, sequela
- Y37.141 Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilianNon-billable
- Y37.141A Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian, initial encounter
- Y37.141D Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian, subsequent encounter
- Y37.141S Military operations involving destruction of aircraft due to accidental detonation of onboard munitions and explosives, civilian, sequela
- Y37.19 Military operations involving other destruction of aircraftNon-billable
- Y37.190 Military operations involving other destruction of aircraft, military personnelNon-billable
- Y37.190A Military operations involving other destruction of aircraft, military personnel, initial encounter
- Y37.190D Military operations involving other destruction of aircraft, military personnel, subsequent encounter
- Y37.190S Military operations involving other destruction of aircraft, military personnel, sequela
- Y37.191 Military operations involving other destruction of aircraft, civilianNon-billable
- Y37.191A Military operations involving other destruction of aircraft, civilian, initial encounter
- Y37.191D Military operations involving other destruction of aircraft, civilian, subsequent encounter
- Y37.191S Military operations involving other destruction of aircraft, civilian, sequela
- Y37.2 Military operations involving other explosions and fragmentsNon-billable
- Y37.20 Military operations involving unspecified explosion and fragmentsNon-billable
- Y37.200 Military operations involving unspecified explosion and fragments, military personnelNon-billable
- Y37.200A Military operations involving unspecified explosion and fragments, military personnel, initial encounter
- Y37.200D Military operations involving unspecified explosion and fragments, military personnel, subsequent encounter
- Y37.200S Military operations involving unspecified explosion and fragments, military personnel, sequela
- Y37.201 Military operations involving unspecified explosion and fragments, civilianNon-billable
- Y37.201A Military operations involving unspecified explosion and fragments, civilian, initial encounter
- Y37.201D Military operations involving unspecified explosion and fragments, civilian, subsequent encounter
- Y37.201S Military operations involving unspecified explosion and fragments, civilian, sequela
- Y37.21 Military operations involving explosion of aerial bombNon-billable
- Y37.210 Military operations involving explosion of aerial bomb, military personnelNon-billable
- Y37.210A Military operations involving explosion of aerial bomb, military personnel, initial encounter
- Y37.210D Military operations involving explosion of aerial bomb, military personnel, subsequent encounter
- Y37.210S Military operations involving explosion of aerial bomb, military personnel, sequela
- Y37.211 Military operations involving explosion of aerial bomb, civilianNon-billable
- Y37.211A Military operations involving explosion of aerial bomb, civilian, initial encounter
- Y37.211D Military operations involving explosion of aerial bomb, civilian, subsequent encounter
- Y37.211S Military operations involving explosion of aerial bomb, civilian, sequela
- Y37.22 Military operations involving explosion of guided missileNon-billable
- Y37.220 Military operations involving explosion of guided missile, military personnelNon-billable
- Y37.220A Military operations involving explosion of guided missile, military personnel, initial encounter
- Y37.220D Military operations involving explosion of guided missile, military personnel, subsequent encounter
- Y37.220S Military operations involving explosion of guided missile, military personnel, sequela
- Y37.221 Military operations involving explosion of guided missile, civilianNon-billable
- Y37.221A Military operations involving explosion of guided missile, civilian, initial encounter
- Y37.221D Military operations involving explosion of guided missile, civilian, subsequent encounter
- Y37.221S Military operations involving explosion of guided missile, civilian, sequela
- Y37.23 Military operations involving explosion of improvised explosive device [IED]Non-billable
- Y37.230 Military operations involving explosion of improvised explosive device [IED], military personnelNon-billable
- Y37.230A Military operations involving explosion of improvised explosive device [IED], military personnel, initial encounter
- Y37.230D Military operations involving explosion of improvised explosive device [IED], military personnel, subsequent encounter
- Y37.230S Military operations involving explosion of improvised explosive device [IED], military personnel, sequela
- Y37.231 Military operations involving explosion of improvised explosive device [IED], civilianNon-billable
- Y37.231A Military operations involving explosion of improvised explosive device [IED], civilian, initial encounter
- Y37.231D Military operations involving explosion of improvised explosive device [IED], civilian, subsequent encounter
- Y37.231S Military operations involving explosion of improvised explosive device [IED], civilian, sequela
- Y37.24 Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch deviceNon-billable
- Y37.240 Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnelNon-billable
- Y37.240A Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnel, initial encounter
- Y37.240D Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnel, subsequent encounter
- Y37.240S Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, military personnel, sequela
- Y37.241 Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilianNon-billable
- Y37.241A Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilian, initial encounter
- Y37.241D Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilian, subsequent encounter
- Y37.241S Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilian, sequela
- Y37.25 Military operations involving fragments from munitionsNon-billable
- Y37.250 Military operations involving fragments from munitions, military personnelNon-billable
- Y37.250A Military operations involving fragments from munitions, military personnel, initial encounter
- Y37.250D Military operations involving fragments from munitions, military personnel, subsequent encounter
- Y37.250S Military operations involving fragments from munitions, military personnel, sequela
- Y37.251 Military operations involving fragments from munitions, civilianNon-billable
- Y37.251A Military operations involving fragments from munitions, civilian, initial encounter
- Y37.251D Military operations involving fragments from munitions, civilian, subsequent encounter
- Y37.251S Military operations involving fragments from munitions, civilian, sequela
- Y37.26 Military operations involving fragments of improvised explosive device [IED]Non-billable
- Y37.260 Military operations involving fragments of improvised explosive device [IED], military personnelNon-billable
- Y37.260A Military operations involving fragments of improvised explosive device [IED], military personnel, initial encounter
- Y37.260D Military operations involving fragments of improvised explosive device [IED], military personnel, subsequent encounter
- Y37.260S Military operations involving fragments of improvised explosive device [IED], military personnel, sequela
- Y37.261 Military operations involving fragments of improvised explosive device [IED], civilianNon-billable
- Y37.261A Military operations involving fragments of improvised explosive device [IED], civilian, initial encounter
- Y37.261D Military operations involving fragments of improvised explosive device [IED], civilian, subsequent encounter
- Y37.261S Military operations involving fragments of improvised explosive device [IED], civilian, sequela
- Y37.27 Military operations involving fragments from weaponsNon-billable
- Y37.270 Military operations involving fragments from weapons, military personnelNon-billable
- Y37.270A Military operations involving fragments from weapons, military personnel, initial encounter
- Y37.270D Military operations involving fragments from weapons, military personnel, subsequent encounter
- Y37.270S Military operations involving fragments from weapons, military personnel, sequela
- Y37.271 Military operations involving fragments from weapons, civilianNon-billable
- Y37.271A Military operations involving fragments from weapons, civilian, initial encounter
- Y37.271D Military operations involving fragments from weapons, civilian, subsequent encounter
- Y37.271S Military operations involving fragments from weapons, civilian, sequela
- Y37.29 Military operations involving other explosions and fragmentsNon-billable
- Y37.290 Military operations involving other explosions and fragments, military personnelNon-billable
- Y37.290A Military operations involving other explosions and fragments, military personnel, initial encounter
- Y37.290D Military operations involving other explosions and fragments, military personnel, subsequent encounter
- Y37.290S Military operations involving other explosions and fragments, military personnel, sequela
- Y37.291 Military operations involving other explosions and fragments, civilianNon-billable
- Y37.291A Military operations involving other explosions and fragments, civilian, initial encounter
- Y37.291D Military operations involving other explosions and fragments, civilian, subsequent encounter
- Y37.291S Military operations involving other explosions and fragments, civilian, sequela
- Y37.3 Military operations involving fires, conflagrations and hot substancesNon-billable
- Y37.30 Military operations involving unspecified fire, conflagration and hot substanceNon-billable
- Y37.300 Military operations involving unspecified fire, conflagration and hot substance, military personnelNon-billable
- Y37.300A Military operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter
- Y37.300D Military operations involving unspecified fire, conflagration and hot substance, military personnel, subsequent encounter
- Y37.300S Military operations involving unspecified fire, conflagration and hot substance, military personnel, sequela
- Y37.301 Military operations involving unspecified fire, conflagration and hot substance, civilianNon-billable
- Y37.301A Military operations involving unspecified fire, conflagration and hot substance, civilian, initial encounter
- Y37.301D Military operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter
- Y37.301S Military operations involving unspecified fire, conflagration and hot substance, civilian, sequela
- Y37.31 Military operations involving gasoline bombNon-billable
- Y37.310 Military operations involving gasoline bomb, military personnelNon-billable
- Y37.310A Military operations involving gasoline bomb, military personnel, initial encounter
- Y37.310D Military operations involving gasoline bomb, military personnel, subsequent encounter
- Y37.310S Military operations involving gasoline bomb, military personnel, sequela
- Y37.311 Military operations involving gasoline bomb, civilianNon-billable
- Y37.311A Military operations involving gasoline bomb, civilian, initial encounter
- Y37.311D Military operations involving gasoline bomb, civilian, subsequent encounter
- Y37.311S Military operations involving gasoline bomb, civilian, sequela
- Y37.32 Military operations involving incendiary bulletNon-billable
- Y37.320 Military operations involving incendiary bullet, military personnelNon-billable
- Y37.320A Military operations involving incendiary bullet, military personnel, initial encounter
- Y37.320D Military operations involving incendiary bullet, military personnel, subsequent encounter
- Y37.320S Military operations involving incendiary bullet, military personnel, sequela
- Y37.321 Military operations involving incendiary bullet, civilianNon-billable
- Y37.321A Military operations involving incendiary bullet, civilian, initial encounter
- Y37.321D Military operations involving incendiary bullet, civilian, subsequent encounter
- Y37.321S Military operations involving incendiary bullet, civilian, sequela
- Y37.33 Military operations involving flamethrowerNon-billable
- Y37.330 Military operations involving flamethrower, military personnelNon-billable
- Y37.330A Military operations involving flamethrower, military personnel, initial encounter
- Y37.330D Military operations involving flamethrower, military personnel, subsequent encounter
- Y37.330S Military operations involving flamethrower, military personnel, sequela
- Y37.331 Military operations involving flamethrower, civilianNon-billable
- Y37.331A Military operations involving flamethrower, civilian, initial encounter
- Y37.331D Military operations involving flamethrower, civilian, subsequent encounter
- Y37.331S Military operations involving flamethrower, civilian, sequela
- Y37.39 Military operations involving other fires, conflagrations and hot substancesNon-billable
- Y37.390 Military operations involving other fires, conflagrations and hot substances, military personnelNon-billable
- Y37.390A Military operations involving other fires, conflagrations and hot substances, military personnel, initial encounter
- Y37.390D Military operations involving other fires, conflagrations and hot substances, military personnel, subsequent encounter
- Y37.390S Military operations involving other fires, conflagrations and hot substances, military personnel, sequela
- Y37.391 Military operations involving other fires, conflagrations and hot substances, civilianNon-billable
- Y37.391A Military operations involving other fires, conflagrations and hot substances, civilian, initial encounter
- Y37.391D Military operations involving other fires, conflagrations and hot substances, civilian, subsequent encounter
- Y37.391S Military operations involving other fires, conflagrations and hot substances, civilian, sequela
- Y37.4 Military operations involving firearm discharge and other forms of conventional warfareNon-billable
- Y37.41 Military operations involving rubber bulletsNon-billable
- Y37.410 Military operations involving rubber bullets, military personnelNon-billable
- Y37.410A Military operations involving rubber bullets, military personnel, initial encounter
- Y37.410D Military operations involving rubber bullets, military personnel, subsequent encounter
- Y37.410S Military operations involving rubber bullets, military personnel, sequela
- Y37.411 Military operations involving rubber bullets, civilianNon-billable
- Y37.411A Military operations involving rubber bullets, civilian, initial encounter
- Y37.411D Military operations involving rubber bullets, civilian, subsequent encounter
- Y37.411S Military operations involving rubber bullets, civilian, sequela
- Y37.42 Military operations involving firearms pelletsNon-billable
- Y37.420 Military operations involving firearms pellets, military personnelNon-billable
- Y37.420A Military operations involving firearms pellets, military personnel, initial encounter
- Y37.420D Military operations involving firearms pellets, military personnel, subsequent encounter
- Y37.420S Military operations involving firearms pellets, military personnel, sequela
- Y37.421 Military operations involving firearms pellets, civilianNon-billable
- Y37.421A Military operations involving firearms pellets, civilian, initial encounter
- Y37.421D Military operations involving firearms pellets, civilian, subsequent encounter
- Y37.421S Military operations involving firearms pellets, civilian, sequela
- Y37.43 Military operations involving other firearms dischargeNon-billable
- Y37.430 Military operations involving other firearms discharge, military personnelNon-billable
- Y37.430A Military operations involving other firearms discharge, military personnel, initial encounter
- Y37.430D Military operations involving other firearms discharge, military personnel, subsequent encounter
- Y37.430S Military operations involving other firearms discharge, military personnel, sequela
- Y37.431 Military operations involving other firearms discharge, civilianNon-billable
- Y37.431A Military operations involving other firearms discharge, civilian, initial encounter
- Y37.431D Military operations involving other firearms discharge, civilian, subsequent encounter
- Y37.431S Military operations involving other firearms discharge, civilian, sequela
- Y37.44 Military operations involving unarmed hand to hand combatNon-billable
- Y37.440 Military operations involving unarmed hand to hand combat, military personnelNon-billable
- Y37.440A Military operations involving unarmed hand to hand combat, military personnel, initial encounter
- Y37.440D Military operations involving unarmed hand to hand combat, military personnel, subsequent encounter
- Y37.440S Military operations involving unarmed hand to hand combat, military personnel, sequela
- Y37.441 Military operations involving unarmed hand to hand combat, civilianNon-billable
- Y37.441A Military operations involving unarmed hand to hand combat, civilian, initial encounter
- Y37.441D Military operations involving unarmed hand to hand combat, civilian, subsequent encounter
- Y37.441S Military operations involving unarmed hand to hand combat, civilian, sequela
- Y37.45 Military operations involving combat using blunt or piercing objectNon-billable
- Y37.450 Military operations involving combat using blunt or piercing object, military personnelNon-billable
- Y37.450A Military operations involving combat using blunt or piercing object, military personnel, initial encounter
- Y37.450D Military operations involving combat using blunt or piercing object, military personnel, subsequent encounter
- Y37.450S Military operations involving combat using blunt or piercing object, military personnel, sequela
- Y37.451 Military operations involving combat using blunt or piercing object, civilianNon-billable
- Y37.451A Military operations involving combat using blunt or piercing object, civilian, initial encounter
- Y37.451D Military operations involving combat using blunt or piercing object, civilian, subsequent encounter
- Y37.451S Military operations involving combat using blunt or piercing object, civilian, sequela
- Y37.46 Military operations involving intentional restriction of air and airwayNon-billable
- Y37.460 Military operations involving intentional restriction of air and airway, military personnelNon-billable
- Y37.460A Military operations involving intentional restriction of air and airway, military personnel, initial encounter
- Y37.460D Military operations involving intentional restriction of air and airway, military personnel, subsequent encounter
- Y37.460S Military operations involving intentional restriction of air and airway, military personnel, sequela
- Y37.461 Military operations involving intentional restriction of air and airway, civilianNon-billable
- Y37.461A Military operations involving intentional restriction of air and airway, civilian, initial encounter
- Y37.461D Military operations involving intentional restriction of air and airway, civilian, subsequent encounter
- Y37.461S Military operations involving intentional restriction of air and airway, civilian, sequela
- Y37.47 Military operations involving unintentional restriction of air and airwayNon-billable
- Y37.470 Military operations involving unintentional restriction of air and airway, military personnelNon-billable
- Y37.470A Military operations involving unintentional restriction of air and airway, military personnel, initial encounter
- Y37.470D Military operations involving unintentional restriction of air and airway, military personnel, subsequent encounter
- Y37.470S Military operations involving unintentional restriction of air and airway, military personnel, sequela
- Y37.471 Military operations involving unintentional restriction of air and airway, civilianNon-billable
- Y37.471A Military operations involving unintentional restriction of air and airway, civilian, initial encounter
- Y37.471D Military operations involving unintentional restriction of air and airway, civilian, subsequent encounter
- Y37.471S Military operations involving unintentional restriction of air and airway, civilian, sequela
- Y37.49 Military operations involving other forms of conventional warfareNon-billable
- Y37.490 Military operations involving other forms of conventional warfare, military personnelNon-billable
- Y37.490A Military operations involving other forms of conventional warfare, military personnel, initial encounter
- Y37.490D Military operations involving other forms of conventional warfare, military personnel, subsequent encounter
- Y37.490S Military operations involving other forms of conventional warfare, military personnel, sequela
- Y37.491 Military operations involving other forms of conventional warfare, civilianNon-billable
- Y37.491A Military operations involving other forms of conventional warfare, civilian, initial encounter
- Y37.491D Military operations involving other forms of conventional warfare, civilian, subsequent encounter
- Y37.491S Military operations involving other forms of conventional warfare, civilian, sequela
- Y37.5 Military operations involving nuclear weaponsNon-billable
- Y37.50 Military operations involving unspecified effect of nuclear weaponNon-billable
- Y37.500 Military operations involving unspecified effect of nuclear weapon, military personnelNon-billable
- Y37.500A Military operations involving unspecified effect of nuclear weapon, military personnel, initial encounter
- Y37.500D Military operations involving unspecified effect of nuclear weapon, military personnel, subsequent encounter
- Y37.500S Military operations involving unspecified effect of nuclear weapon, military personnel, sequela
- Y37.501 Military operations involving unspecified effect of nuclear weapon, civilianNon-billable
- Y37.501A Military operations involving unspecified effect of nuclear weapon, civilian, initial encounter
- Y37.501D Military operations involving unspecified effect of nuclear weapon, civilian, subsequent encounter
- Y37.501S Military operations involving unspecified effect of nuclear weapon, civilian, sequela
- Y37.51 Military operations involving direct blast effect of nuclear weaponNon-billable
- Y37.510 Military operations involving direct blast effect of nuclear weapon, military personnelNon-billable
- Y37.510A Military operations involving direct blast effect of nuclear weapon, military personnel, initial encounter
- Y37.510D Military operations involving direct blast effect of nuclear weapon, military personnel, subsequent encounter
- Y37.510S Military operations involving direct blast effect of nuclear weapon, military personnel, sequela
- Y37.511 Military operations involving direct blast effect of nuclear weapon, civilianNon-billable
- Y37.511A Military operations involving direct blast effect of nuclear weapon, civilian, initial encounter
- Y37.511D Military operations involving direct blast effect of nuclear weapon, civilian, subsequent encounter
- Y37.511S Military operations involving direct blast effect of nuclear weapon, civilian, sequela
- Y37.52 Military operations involving indirect blast effect of nuclear weaponNon-billable
- Y37.520 Military operations involving indirect blast effect of nuclear weapon, military personnelNon-billable
- Y37.520A Military operations involving indirect blast effect of nuclear weapon, military personnel, initial encounter
- Y37.520D Military operations involving indirect blast effect of nuclear weapon, military personnel, subsequent encounter
- Y37.520S Military operations involving indirect blast effect of nuclear weapon, military personnel, sequela
- Y37.521 Military operations involving indirect blast effect of nuclear weapon, civilianNon-billable
- Y37.521A Military operations involving indirect blast effect of nuclear weapon, civilian, initial encounter
- Y37.521D Military operations involving indirect blast effect of nuclear weapon, civilian, subsequent encounter
- Y37.521S Military operations involving indirect blast effect of nuclear weapon, civilian, sequela
- Y37.53 Military operations involving thermal radiation effect of nuclear weaponNon-billable
- Y37.530 Military operations involving thermal radiation effect of nuclear weapon, military personnelNon-billable
- Y37.530A Military operations involving thermal radiation effect of nuclear weapon, military personnel, initial encounter
- Y37.530D Military operations involving thermal radiation effect of nuclear weapon, military personnel, subsequent encounter
- Y37.530S Military operations involving thermal radiation effect of nuclear weapon, military personnel, sequela
- Y37.531 Military operations involving thermal radiation effect of nuclear weapon, civilianNon-billable
- Y37.531A Military operations involving thermal radiation effect of nuclear weapon, civilian, initial encounter
- Y37.531D Military operations involving thermal radiation effect of nuclear weapon, civilian, subsequent encounter
- Y37.531S Military operations involving thermal radiation effect of nuclear weapon, civilian, sequela
- Y37.54 Military operation involving nuclear radiation effects of nuclear weaponNon-billable
- Y37.540 Military operation involving nuclear radiation effects of nuclear weapon, military personnelNon-billable
- Y37.540A Military operation involving nuclear radiation effects of nuclear weapon, military personnel, initial encounter
- Y37.540D Military operation involving nuclear radiation effects of nuclear weapon, military personnel, subsequent encounter
- Y37.540S Military operation involving nuclear radiation effects of nuclear weapon, military personnel, sequela
- Y37.541 Military operation involving nuclear radiation effects of nuclear weapon, civilianNon-billable
- Y37.541A Military operation involving nuclear radiation effects of nuclear weapon, civilian, initial encounter
- Y37.541D Military operation involving nuclear radiation effects of nuclear weapon, civilian, subsequent encounter
- Y37.541S Military operation involving nuclear radiation effects of nuclear weapon, civilian, sequela
- Y37.59 Military operation involving other effects of nuclear weaponsNon-billable
- Y37.590 Military operation involving other effects of nuclear weapons, military personnelNon-billable
- Y37.590A Military operation involving other effects of nuclear weapons, military personnel, initial encounter
- Y37.590D Military operation involving other effects of nuclear weapons, military personnel, subsequent encounter
- Y37.590S Military operation involving other effects of nuclear weapons, military personnel, sequela
- Y37.591 Military operation involving other effects of nuclear weapons, civilianNon-billable
- Y37.591A Military operation involving other effects of nuclear weapons, civilian, initial encounter
- Y37.591D Military operation involving other effects of nuclear weapons, civilian, subsequent encounter
- Y37.591S Military operation involving other effects of nuclear weapons, civilian, sequela
- Y37.6 Military operations involving biological weaponsNon-billable
- Y37.6X Military operations involving biological weaponsNon-billable
- Y37.6X0 Military operations involving biological weapons, military personnelNon-billable
- Y37.6X0A Military operations involving biological weapons, military personnel, initial encounter
- Y37.6X0D Military operations involving biological weapons, military personnel, subsequent encounter
- Y37.6X0S Military operations involving biological weapons, military personnel, sequela
- Y37.6X1 Military operations involving biological weapons, civilianNon-billable
- Y37.6X1A Military operations involving biological weapons, civilian, initial encounter
- Y37.6X1D Military operations involving biological weapons, civilian, subsequent encounter
- Y37.6X1S Military operations involving biological weapons, civilian, sequela
- Y37.7 Military operations involving chemical weapons and other forms of unconventional warfareNon-billable
- Y37.7X Military operations involving chemical weapons and other forms of unconventional warfareNon-billable
- Y37.7X0 Military operations involving chemical weapons and other forms of unconventional warfare, military personnelNon-billable
- Y37.7X0A Military operations involving chemical weapons and other forms of unconventional warfare, military personnel, initial encounter
- Y37.7X0D Military operations involving chemical weapons and other forms of unconventional warfare, military personnel, subsequent encounter
- Y37.7X0S Military operations involving chemical weapons and other forms of unconventional warfare, military personnel, sequela
- Y37.7X1 Military operations involving chemical weapons and other forms of unconventional warfare, civilianNon-billable
- Y37.7X1A Military operations involving chemical weapons and other forms of unconventional warfare, civilian, initial encounter
- Y37.7X1D Military operations involving chemical weapons and other forms of unconventional warfare, civilian, subsequent encounter
- Y37.7X1S Military operations involving chemical weapons and other forms of unconventional warfare, civilian, sequela
- Y37.9 Other and unspecified military operationsNon-billable
- Y37.90 Military operations, unspecifiedNon-billable
- Y37.90XA Military operations, unspecified, initial encounter
- Y37.90XD Military operations, unspecified, subsequent encounter
- Y37.90XS Military operations, unspecified, sequela
- Y37.91 Military operations involving unspecified weapon of mass destruction [WMD]Non-billable
- Y37.91XA Military operations involving unspecified weapon of mass destruction [WMD], initial encounter
- Y37.91XD Military operations involving unspecified weapon of mass destruction [WMD], subsequent encounter
- Y37.91XS Military operations involving unspecified weapon of mass destruction [WMD], sequela
- Y37.92 Military operations involving friendly fireNon-billable
- Y37.92XA Military operations involving friendly fire, initial encounter
- Y37.92XD Military operations involving friendly fire, subsequent encounter
- Y37.92XS Military operations involving friendly fire, sequela
- Y37.A Blast overpressure in military operationsNon-billable
- Y37.A1 Low level blast overpressure in military operationsNon-billable
- Y37.A1XA Low level blast overpressure in military operations, initial encounter New
- Y37.A1XD Low level blast overpressure in military operations, subsequent encounter New
- Y37.A1XS Low level blast overpressure in military operations, sequela New
- Y37.A2 High level blast overpressure in military operationsNon-billable
- Y37.A2XA High level blast overpressure in military operations, initial encounter New
- Y37.A2XD High level blast overpressure in military operations, subsequent encounter New
- Y37.A2XS High level blast overpressure in military operations, sequela New
About the Y37 Code Range
ICD-10 code section Y37 covers injuries and incidents related to military operations, including various explosions, fires, and combat activities involving both military personnel and civilians. This section specifically identifies causes such as marine weapons, aircraft destruction, nuclear, biological, and chemical warfare, as well as conventional and unconventional warfare scenarios.
This section is used for coding precise external causes of injury sustained during military engagements. It details specific weapons such as depth-charges, marine mines, torpedoes, aerial bombs, improvised explosive devices (IEDs), and nuclear weapons. There are also codes for effects from intentional and unintentional airway restrictions, firearm discharges, hand-to-hand combat, and chemical or biological attacks. Codes differentiate between military personnel and civilians, with encounter types classified as initial, subsequent, or sequela. For example, if coding an injury from a marine weapon explosion suffered by a service member, coder would use Y37.000, with a seventh character to specify the encounter. The codes assist in accurately capturing injury circumstances in war zones, aiding clinical documentation and analysis of military-related injuries, often referred to in broad terms as "injury resulting from military weapons."
Questions About This Page
How many billable codes are in the Y37 range?
Of the 418 codes in this range, 273 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the Y37 range classify?
The range classifies military operations. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
All ICD-10-CM ChaptersAll of Chapter 20ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
