Legal intervention, operations of war, military operations, and terrorism (Y35-Y38) ICD-10-CM
The Y35–Y38 section covers legal intervention, operations of war, military operations, and terrorism with 1,421 ICD-10-CM diagnosis codes, of which 942 are billable in fiscal year 2027. The section is organized into the 4 code ranges listed below.
Code Ranges in This Section 4 ranges · 1,421 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| Y35 | Legal intervention (Y35) | 398 | 276 |
| Y36 | Operations of war (Y36) | 455 | 297 |
| Y37 | Military operations (Y37) | 418 | 273 |
| Y38 | Terrorism (Y38) | 150 | 96 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the Y35–Y38 Code Range
A firearm discharge during legal intervention and an explosion during a war operation fall into different categories, even when both cause injury.
Y35 separates legal intervention by the means involved, such as firearms, explosives, gas, blunt objects, and sharp objects. Y36 describes operations of war, while Y37 describes military operations. Both distinguish explosions, fires, firearms, and nuclear, biological, and chemical weapons. They also identify blast overpressure; war operations separately identify events after hostilities end. Y38 separates terrorism by the means involved and identifies secondary effects.
Each category has a seventh character for an initial encounter (A), subsequent encounter (D), or sequela (S), meaning later effects.
Questions About This Page
How many codes are in the Y35-Y38 range?
The Y35-Y38 range contains 1,421 ICD-10-CM diagnosis codes in FY 2027. 942 of them are billable, and the rest are category headers that organize the section.
What conditions does Y35-Y38 cover?
The range covers legal intervention, operations of war, military operations, and terrorism. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
