X05 – Exposure to ignition or melting of nightwear

ICD-10-CM 2027 diagnosis code · Exposure to smoke, fire and flames

Non-billable header

ICD-10-CM code X05

Code: X05 (claims format: X05)
Description: Exposure to ignition or melting of nightwear
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 20. External causes of morbidity (V00-Y99)
Block: X00-X08 Exposure to smoke, fire and flames

Billable codes under X05

X05 is a header code and cannot be used on claims. Choose the most specific code:

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes for X05

Excludes2 (not included here):

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:

The appropriate 7th character is to be added to code X05

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block X00-X08

Excludes1 (not coded here):

arson (X97)

Excludes2 (not included here):

explosions (W35-W40)
lightning (T75.0-)
transport accident (V01-V99)

Frequently asked questions

What is ICD-10 code X05?

X05 is the ICD-10-CM code for exposure to ignition or melting of nightwear, in the block X00-X08 (Exposure to smoke, fire and flames).

Is X05 a billable code?

No. X05 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.