Coding and coverage · ICD-10-CM
Y37 Military operations
This code needs a 7th character (use X as a placeholder for missing characters).
Codes under this one
- Y37.0 Military operations involving explosion of marine weaponsHeader
- Y37.1 Military operations involving destruction of aircraftHeader
- Y37.2 Military operations involving other explosions and fragmentsHeader
- Y37.3 Military operations involving fires, conflagrations and hot substancesHeader
- Y37.4 Military operations involving firearm discharge and other forms of conventional warfareHeader
- Y37.5 Military operations involving nuclear weaponsHeader
- Y37.6 Military operations involving biological weaponsHeader
- Y37.7 Military operations involving chemical weapons and other forms of unconventional warfareHeader
- Y37.9 Other and unspecified military operationsHeader
- Y37.A Blast overpressure in military operationsHeader
Instructional notes
Chapter 20
Notes
- 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.
This code
Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
- 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.-)
Includes
- injuries to military personnel and civilians occurring during peacetime on military property and during routine military exercises and operations
7th charactersThe appropriate 7th character is to be added to each code from category Y37
- A initial encounter
- D subsequent encounter
- S sequela
Chapter 20: External causes of morbidity · Y35-Y38 Legal intervention, operations of war, military operations, and terrorism (Y35-Y38)
Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.
Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.