Y36.90XS – War operations, unspecified, sequela

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

Billable code

ICD-10-CM code Y36.90XS

Code: Y36.90XS (claims format: Y3690XS)
Description: War operations, unspecified, sequela
Billable: Yes – valid for HIPAA-covered transactions
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 › Y36.9 › Y36.90

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

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

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

Related codes in Y36.90

Frequently asked questions

What is ICD-10 code Y36.90XS?

Y36.90XS is the ICD-10-CM code for war operations, unspecified, sequela, in the block Y35-Y38 (Legal intervention, operations of war, military operations, and terrorism).

Is Y36.90XS a billable code?

Yes. Y36.90XS is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Y36.90XS 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.