Exposure to ignition or melting of nightwear (X05) ICD-10-CM
The X05 code range covers exposure to ignition or melting of nightwear with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- 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
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to code X05
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the X05 Range 4 codes · 3 billable
About the X05 Code Range
Nightwear can catch fire or melt, exposing a person to the event. This category sits within exposures to smoke, fire and flames.
The subdivisions differ by encounter type. X05.XXXA identifies an initial encounter, X05.XXXD a subsequent encounter, and X05.XXXS a sequela, or later effect.
Questions About This Page
How many billable codes are in the X05 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the X05 range classify?
The range classifies exposure to ignition or melting of nightwear. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
