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ICD-10-CM 2027 diagnosis code

Y38.3X2ATerrorism involving fires, conflagration and hot substances, civilian injured, initial encounter

✓ Billable / specificRequires 7th character

Y38.3X2A is a valid, billable ICD-10-CM code for terrorism involving fires, conflagration and hot substances, civilian injured, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Terrorism involving fire/hot subst, civilian injured, init

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 Y38.3X2A

Y38.3X2A is the ICD-10-CM diagnosis code for terrorism involving fires, conflagration and hot substances, civilian injured, initial encounter. It belongs to category Y38 (terrorism), 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 "A" means initial encounter: use it while the patient is receiving active treatment for the condition.

Use an additional code for place of occurrence (Y92.-).

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

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 E979.3 (terrorism involving fires).

7th character

Ainitial encounter

Other encounter types for Y38.3X2:

Notes that apply from higher levels

Instructions written at a parent level also apply to Y38.3X2A.

› From Y38.3 Terrorism involving fires, conflagration and hot substances
Excludes1
  • terrorism involving fire or heat of nuclear weapon (Y38.5)
› From Y38 Terrorism
Use additional code
  • code for place of occurrence (Y92.-)

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

ICD-9-CM equivalent

Converter →
  • E979.3Terrorism involving firesapproximate

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 Y38.3X2A

Is Y38.3X2A billable?

Yes. Y38.3X2A is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "A" at the end of Y38.3X2A mean?

It is the 7th character for initial encounter. Per the official guidelines, use it while the patient is receiving active treatment for the condition.

Can Y38.3X2A be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Y38.3X2A as a principal diagnosis.

Is Y38.3X2A a CC or MCC?

No. Y38.3X2A is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for Y38.3X2A?

The CMS General Equivalence Mappings map Y38.3X2A to ICD-9-CM E979.3.