Skip to content
Dx

ICD-10-CM 2027 diagnosis code

Y36.7X0SWar operations involving chemical weapons and other forms of unconventional warfare, military personnel, sequela

✓ Billable / specificPOA exemptRequires 7th character

Y36.7X0S is a valid, billable ICD-10-CM code for war operations involving chemical weapons and other forms of unconventional warfare, military personnel, sequela. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: War op w chem weapons and oth unconvtl warfare, milt, sqla

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 Y36.7X0S

Y36.7X0S is the ICD-10-CM diagnosis code for war operations involving chemical weapons and other forms of unconventional warfare, military personnel, sequela. It belongs to category Y36 (operations of war), block Y35-Y38 (legal intervention, operations of war, military operations, and terrorism) and chapter 20 (external causes of morbidity). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

The 7th character "S" means sequela: use it for complications or conditions that arise as a direct result of the original condition.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

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

Before ICD-10, this condition was coded in ICD-9-CM as E999.0 (late effect of injury due to war operations).

7th character

Ssequela

Other encounter types for Y36.7X0:

Notes that apply from higher levels

Instructions written at a parent level also apply to Y36.7X0S.

› From Y36.7 War operations involving chemical weapons and other forms of unconventional warfare
Excludes1
  • war operations involving incendiary devices (Y36.3-, Y36.5-)
› From Y36 Operations of war
Includes
  • injuries to military personnel and civilians caused by war, civil insurrection, and peacekeeping missions
Excludes1

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

ICD-9-CM equivalent

Converter →
  • E999.0Late effect of injury due to war operationsapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Y36.7X0S

Is Y36.7X0S billable?

Yes. Y36.7X0S is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "S" at the end of Y36.7X0S mean?

It is the 7th character for sequela. Per the official guidelines, use it for complications or conditions that arise as a direct result of the original condition.

Can Y36.7X0S be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Y36.7X0S as a principal diagnosis.

Is Y36.7X0S a CC or MCC?

No. Y36.7X0S is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for Y36.7X0S?

The CMS General Equivalence Mappings map Y36.7X0S to ICD-9-CM E999.0.