X05Exposure to ignition or melting of nightwear

X05 is the ICD-10-CM diagnosis code for exposure to ignition or melting of nightwear. It belongs to block X00-X08 (exposure to smoke, fire and flames) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: X05.XXXA (initial encounter), X05.XXXD (subsequent encounter) and X05.XXXS (sequela).

The conditions in its Excludes2 note aren't part of X05, but may be coded alongside it if the patient has both: 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.-) and 1 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.