ICD-10-CM 2027 diagnosis code

Y37.20Military operations involving unspecified explosion and fragments

Not billable — use a more specific codeRequires 7th character

Y37.20 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it and add the required 7th character.Short description: Military operations involving unsp explosion and fragments

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Y37.20

Y37.20 is the ICD-10-CM diagnosis code for military operations involving unspecified explosion and fragments. It belongs to category Y37 (military operations), block Y35-Y38 (legal intervention, operations of war, military operations, and terrorism) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within Y37.2, choose Y37.20 (unspecified explosion and fragments) only when documentation doesn't support a more specific option: explosion of aerial bomb (Y37.21), explosion of guided missile (Y37.22), explosion of improvised explosive device [IED] (Y37.23), explosion due to accidental detonation and discharge of own munitions or munitions launch device (Y37.24), fragments from munitions (Y37.25), fragments of improvised explosive device [IED] (Y37.26), fragments from weapons (Y37.27) and other explosions and fragments (Y37.29).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category Y37

Ainitial encounter
Dsubsequent encounter
Ssequela

Coding notes

Applicable toConditions and synonyms classified to this code

Military operations involving air blast NOS
Military operations involving blast NOS
Military operations involving blast fragments NOS
Military operations involving blast wave NOS
Military operations involving blast wind NOS
Military operations involving explosion NOS
Military operations involving explosion of bomb NOS

Notes that apply from higher levels

Instructions written at a parent level also apply to Y37.20.

› From Y37.2 Military operations involving other explosions and fragments

Excludes1

military operations involving explosion of aircraft (Y37.1-)
military operations involving explosion of marine weapons (Y37.0-)
military operations involving explosion of nuclear weapons (Y37.5-)

› From Y37 Military operations

Includes

injuries to military personnel and civilians occurring during peacetime on military property and during routine military exercises and operations

Excludes1

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.-)

Broader instructions also apply from Chapter 20: External causes of morbidity.

Alphabetic index entries

9 entries

Terms in the official ICD-10-CM index that lead to Y37.20.

Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › air blast
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › blast
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › blast fragments
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › blast wave
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › blast wind
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › bomb
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › explosion (of)
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › explosion (of) › bomb NOS
Military operations (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving) › explosion (of) › fragments

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about Y37.20

Is Y37.20 billable?: No. Y37.20 is a header code. Report one of its more specific subcodes instead.