2027 ICD-10-CM Diagnosis Code Y26Exposure to smoke, fire and flames, undetermined intent

ICD-10-CM Codes›V01–Y99›Y21-Y33›Y26

ICD-10-CM Y26
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Exposure to smoke, fire and flames, undetermined intent
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Y26: its own notes plus those printed at Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Notes

General instructions on how these codes are used.

From Chapter 20 (V00-Y99) External causes of morbidity and mortality applies to 7,461 codes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to code Y26
Values for category Y26 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index; each main term links to its index entry.

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Y26Overview

What is the ICD-10 code for exposure to smoke, fire and flames, undetermined intent?

Y26 is the ICD-10-CM category for exposure to smoke, fire and flames, undetermined intent, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.