ICD-10-CM Tabular Index · Chapter 20 · FY 2026 Y35–Y38
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 2026. The section is organized into the 4 code ranges listed below.
✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
4
Code Ranges
1,421
Diagnosis Codes
942
Billable Codes
Y35–Y38
Code Range
ICD-10-CM
Code Ranges in This Section 4 ranges · 1,421 codes
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
ICD-10-CM codes Y35-Y38 are used to document injuries and health effects related to legal intervention, war operations, military operations, and terrorism. These codes capture various scenarios of injury by different weapons or causes during these specific events, including the identity of those injured.
This code range details external causes affecting law enforcement officials, suspects, bystanders, or unspecified persons involved in legal intervention incidents with firearms, explosives, gases, blunt or sharp objects, conducted energy devices, and other means. For example, Y35.003 covers injuries to suspects from “legal execution by shooting” (synonyms include “lawful killing” and “legal intervention”). Codes also specify the type of legal intervention, such as injury by handgun, machine gun, or rubber bullet, with 7th character extensions to indicate whether the encounter is initial, subsequent, or sequela. Similarly, codes in Y36 and Y37 specify war and military operations, detailing injuries from explosions, destruction of aircraft, fires, chemical, biological, and nuclear weapons, distinguishing between military personnel and civilians. Terrorism-related injuries are coded in Y38, covering causes such as explosions, firearms, chemical and biological weapons, including specific roles like public safety officials, civilians, terrorists, with encounter type distinctions.
These codes help accurately report the context and nature of injuries sustained during official interventions, armed conflicts, and terrorist activities, aiding precise clinical documentation and epidemiological tracking.
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 2026. 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.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
any injury sustained as a result of an encounter with any law enforcement official, serving in any capacity at the time of the encounter, whether on-duty or off-duty. Includes: injury to law enforcement official, suspect and bystander
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 Y35
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
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 caused by war, civil insurrection, and peacekeeping missions
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.
injury to military personnel occurring during peacetime military operations Y37
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 Y36
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
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
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.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
These codes are for use to identify injuries resulting from the unlawful use of force or violence against persons or property to intimidate or coerce a Government, the civilian population, or any segment thereof, in furtherance of political or social objective
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
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 Y38
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
