Y36.A2 – High level blast overpressure in war operations

ICD-10-CM 2027 diagnosis code · Legal intervention, operations of war, military operations, and terrorism

Non-billable header

ICD-10-CM code Y36.A2

Code: Y36.A2 (claims format: Y36A2)
Description: High level blast overpressure in war operations
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 20. External causes of morbidity (V00-Y99)
Block: Y35-Y38 Legal intervention, operations of war, military operations, and terrorism
Parent codes: Y36 › Y36.A

Billable codes under Y36.A2

Y36.A2 is a header code and cannot be used on claims. Choose the most specific code:

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes for Y36.A2

Applicable to:

High level blast overpressure due to explosion in war operations
HLB overpressure in war operations

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Y36 – Operations of war

Includes:

injuries to military personnel and civilians caused by war, civil insurrection, and peacekeeping missions

Excludes1 (not coded here):

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 note:

The appropriate 7th character is to be added to each code from category Y36

Y36.A – Blast overpressure in war operations

Code also:

type of explosive, if known
accidental detonation of onboard munitions (Y36.140)
explosion of grenade (Y36.290)
explosion of torpedo (Y36.040)
improvised explosive device (Y36.230)

Related codes in Y36.A

Y36.A1 – Low level blast overpressure in war operationsHeader

Frequently asked questions

What is ICD-10 code Y36.A2?

Y36.A2 is the ICD-10-CM code for high level blast overpressure in war operations, in the block Y35-Y38 (Legal intervention, operations of war, military operations, and terrorism).

Is Y36.A2 a billable code?

No. Y36.A2 is a header code with more specific child codes; report one of the billable codes listed above.

What category does Y36.A2 belong to?

It belongs to category Y36 – Operations of war.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.