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ICD-10-CM 2027 diagnosis code

Y38.3Terrorism involving fires, conflagration and hot substances

Not billable — use a more specific codeRequires 7th character

Y38.3 is a header code, so it can't be reported by itself. Choose one of the 1 more specific codes beneath it and add the required 7th character.

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 Y38.3

Y38.3 is the ICD-10-CM diagnosis code for terrorism involving fires, conflagration and hot substances. 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 a header code, so it can't be reported by itself; one of its 1 subcodes must be used instead.

Within Y38 (terrorism), Y38.3 is specifically for terrorism involving fires, conflagration and hot substances. Related codes cover involving explosion of marine weapons (Y38.0), involving destruction of aircraft (Y38.1), involving other explosions and fragments (Y38.2), involving firearms (Y38.4), involving nuclear weapons (Y38.5), involving biological weapons (Y38.6), involving chemical weapons (Y38.7), involving other and unspecified means (Y38.8) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Don't report Y38.3 together with the conditions in its Excludes1 note: terrorism involving fire or heat of nuclear weapon (Y38.5).

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

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

7th character

The appropriate 7th character is to be added to each code from category Y38

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Coding notes

Applicable toConditions and synonyms classified to this code
  • Terrorism involving conflagration NOS
  • Terrorism involving fire NOS
  • Terrorism involving petrol bomb
Excludes1Not coded here — never report together with this code
  • terrorism involving fire or heat of nuclear weapon (Y38.5)

Notes that apply from higher levels

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

› From Y38 Terrorism
Use additional code
  • code for place of occurrence (Y92.-)

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

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 Y38.3

Is Y38.3 billable?

No. Y38.3 is a header code. Report one of its more specific subcodes instead.