ICD-10-CM 2027 diagnosis code
Y36.301DWar operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter
Y36.301D is a valid, billable ICD-10-CM code for war operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: War op w unsp fire/conflagr/hot subst, civilian, subs
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 Y36.301D
Y36.301D is the ICD-10-CM diagnosis code for war operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter. 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 "D" means subsequent encounter: use it for encounters after active treatment, while the patient is healing or recovering.
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 E990.9 (injury due to war operations from other and unspecified source).
7th character
Dsubsequent encounter
Other encounter types for Y36.301:
Notes that apply from higher levels
Instructions written at a parent level also apply to Y36.301D.
› From Y36.3 War operations involving fires, conflagrations and hot substances
- war operations involving fires and conflagrations aboard military aircraft (Y36.1-)
- war operations involving fires and conflagrations aboard military watercraft (Y36.0-)
- war operations involving fires and conflagrations caused indirectly by conventional weapons (Y36.2-)
- war operations involving fires and thermal effects of nuclear weapons (Y36.53-)
› From Y36 Operations of war
- injuries to military personnel and civilians caused by war, civil insurrection, and peacekeeping missions
Broader instructions also apply from Chapter 20: External causes of morbidity.
ICD-9-CM equivalent
Converter →- E990.9Injury due to war operations from other and unspecified sourceapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
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 Y36.301D
Is Y36.301D billable?
- Yes. Y36.301D is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "D" at the end of Y36.301D mean?
- It is the 7th character for subsequent encounter. Per the official guidelines, use it for encounters after active treatment, while the patient is healing or recovering.
Can Y36.301D be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Y36.301D as a principal diagnosis.
Is Y36.301D a CC or MCC?
- No. Y36.301D is neither a CC nor an MCC under MS-DRG v44.0.
What is the ICD-9 code for Y36.301D?
- The CMS General Equivalence Mappings map Y36.301D to ICD-9-CM E990.9.