Y36
ICD-10Non-billable categoryOperations of war
Official ICD-10-CM descriptor (FY2026)
Operations of war
Y36 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 caused by war, civil insurrection, and peacekeeping missions
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- injury to military personnel occurring during peacetime military operations (Y37.-)
- military vehicles involved in transport accidents with non-military vehicle during peacetime (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)
7th character
- The appropriate 7th character is to be added to each code from category Y36
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under Y36
- Y36.0War operations involving explosion of marine weaponscategory
- Y36.1War operations involving destruction of aircraftcategory
- Y36.2War operations involving other explosions and fragmentscategory
- Y36.3War operations involving fire/hot substcategory
- Y36.4War op involving firearm discharge and oth conventl warfarecategory
- Y36.5War operations involving nuclear weaponscategory
- Y36.6War operations involving biological weaponscategory
- Y36.7War op involving chemical weapons and oth unconvtl warfarecategory
- Y36.8War operations occurring after cessation of hostilitiescategory
- Y36.9Other and unspecified war operationscategory
- Y36.ABlast overpressure in war 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.