Y37
ICD-10Non-billable categoryMilitary operations
Official ICD-10-CM descriptor (FY2026)
Military operations
Y37 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- injuries to military personnel and civilians occurring during peacetime on military property and during routine military exercises and operations
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- 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
- The appropriate 7th character is to be added to each code from category Y37
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under Y37
- Y37.0Military operations involving explosion of marine weaponscategory
- Y37.1Military operations involving destruction of aircraftcategory
- Y37.2Military operations involving other explosions and fragmentscategory
- Y37.3Military operations involving fire/hot substcategory
- Y37.4Milt op involving firearm discharge and oth conventl warfarecategory
- Y37.5Military operations involving nuclear weaponscategory
- Y37.6Military operations involving biological weaponscategory
- Y37.7Milt op involving chemical weapons and oth unconvtl warfarecategory
- Y37.9Other and unspecified military operationscategory
- Y37.ABlast overpressure in military operationscategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.