2026 ICD-10-CM Diagnosis Code X03Exposure to controlled fire, not in building or structure

ICD-10-CM Codes›V01–Y99›X00-X08›X03

ICD-10-CM X03
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

X03 is a non-billable ICD-10-CM category code for exposure to controlled fire, not in building or structure, so it cannot be submitted on claims. Use a more specific code from this category instead, such as X03.0XXA, X03.0XXD, X03.0XXS, and X03.1XXA.

Code Identity

ICD-10-CM Code
X03
Billable Status
No — Non-Billable Category
Code Describes
Exposure to controlled fire, not in building or structure
Chapter
X00-X08
Exposure to smoke, fire and flames

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionX00-X08Exposure to smoke, fire and flames
CategoryX03Exposure to controlled fire, not in building or structure
This CodeX03Exposure to controlled fire, not in building or structure

Specific Coding for Exposure to controlled fire, not in building or structureOverview

Non-specific codes like X03 require more characters. Use one of these billable codes instead:

  • X03.0 for Exposure to flames in controlled fire, not in building or structure

  • X03.1 for Exposure to smoke in controlled fire, not in building or structure

  • X03.3 for Fall due to controlled fire, not in building or structure

  • X03.4 for Hit by object due to controlled fire, not in building or structure

  • X03.8 for Other exposure to controlled fire, not in building or structure

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • exposure to bon fire
  • exposure to camp-fire
  • exposure to trash fire

7th Character Note

  • The appropriate 7th character is to be added to each code from category X03

7th Character

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About X03Overview

Is X03 (Exposure to controlled fire, not in building or structure) a billable code?

No. This is a category header that groups the codes for exposure to controlled fire, not in building or structure, and headers cannot be submitted on claims. Claims for exposure to controlled fire, not in building or structure need a more specific code from this category, such as X03.0XXA, X03.0XXD, and X03.0XXS.