2026 ICD-10-CM Diagnosis Code Y26Exposure to smoke, fire and flames, undetermined intent

ICD-10-CM CodesV01–Y99Y21-Y33Y26

ICD-10-CM Y26
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Y26 is a non-billable ICD-10-CM category code for exposure to smoke, fire and flames, undetermined intent, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Y26.XXXA, Y26.XXXD, and Y26.XXXS.

Code Identity

ICD-10-CM Code
Y26
Billable Status
No — Non-Billable Category
Code Describes
Exposure to smoke, fire and flames, undetermined intent
Chapter
Y21-Y33
Event of undetermined intent

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionY21-Y33Event of undetermined intent
CategoryY26Exposure to smoke, fire and flames, undetermined intent
This CodeY26Exposure to smoke, fire and flames, undetermined intent

Tabular List NotesGuidance

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

7th Character Note

  • The appropriate 7th character is to be added to code Y26

7th Character

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

Patient EducationClinical

Burns

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

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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 Y26Overview

Is Y26 (Exposure to smoke, fire and flames, undetermined intent) a billable code?

No. This is a category header that groups the codes for exposure to smoke, fire and flames, undetermined intent, and headers cannot be submitted on claims. Claims for exposure to smoke, fire and flames, undetermined intent need a more specific code from this category, such as Y26.XXXA, Y26.XXXD, and Y26.XXXS.