2027 ICD-10-CM Diagnosis Code X05Exposure to ignition or melting of nightwear

ICD-10-CM Codes›V01–Y99›X00-X08›X05

ICD-10-CM X05
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

X05 is a non-billable ICD-10-CM category code for exposure to ignition or melting of nightwear, so it cannot be submitted on claims. Use a more specific code from this category instead, such as X05.XXXA, X05.XXXD, and X05.XXXS.

Code Identity

ICD-10-CM Code
X05
Billable Status
No — Non-Billable Category
Code Describes
Exposure to ignition or melting of nightwear
Short Description
Exposure to ignition or melting of nightwear
Same as the full description in the CMS dataset.
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
CategoryX05Exposure to ignition or melting of nightwear
This CodeX05Exposure to ignition or melting of nightwear

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to X05: its own notes plus those printed at block X00-X08 and Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block X00-X08 Exposure to smoke, fire and flames applies to 120 codes

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On X05 itself
  • exposure to uncontrolled fire in building or structure (X00.-)
  • exposure to uncontrolled fire, not in building or structure (X01.-)
  • exposure to controlled fire in building or structure (X02.-)
  • exposure to controlled fire, not in building or structure (X03.-)
  • exposure to ignition of highly flammable materials (X04.-)
From Block X00-X08 Exposure to smoke, fire and flames applies to 120 codes

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 X05
Values for category X05 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name X05, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming X05: its condition is not part of those codes, and both may be reported when the patient has both.

  • X00 Exposure to uncontrolled fire in building or structure
    Exposure to ignition or melting of nightwear (X05)
  • X04 Exposure to ignition of highly flammable material
    exposure to ignition or melting of nightwear (X05)

External Cause of Injuries IndexGuidance

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

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 X05Overview

What is the ICD-10 code for exposure to ignition or melting of nightwear?

X05 is the ICD-10-CM category for exposure to ignition or melting of nightwear, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is X05 (Exposure to ignition or melting of nightwear) a billable code?

No. This is a category header that groups the codes for exposure to ignition or melting of nightwear, and headers cannot be submitted on claims. Claims for exposure to ignition or melting of nightwear need a more specific code from this category, such as X05.XXXA, X05.XXXD, and X05.XXXS.

Can X05 be reported with X97?

Not as a rule. The Excludes1 note at block X00-X08, which applies to X05, lists "arson (X97)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).