X00.3

Fall from burning building or structure in uncontrolled fire

FY2027Chapter 20: External causes of morbidity/X00–X08 Exposure to smoke, fire and flames

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

X00.3 is a non-billable ICD-10-CM code header for fall from burning building or structure in uncontrolled fire. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. A 7th character is required to complete the code. Its coding notes include a Code first instruction, 1 Excludes1 entry and 6 Excludes2 entries.

7th character

Category X00 requires a 7th character. X00.3 has only 4 characters, so a placeholder X fills the empty positions.

Assembled code X00.3XXA Open code

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

An external cause code is never a principal or first-listed diagnosis. Its 7th character is assigned for each encounter and should match the injury or condition code.

Guidelines I.C.20.a.2; I.C.20.a.6External cause codesRead the official text

Code first

If the underlying condition listed here is present and known, sequence it first.

Inherited from X00 Exposure to uncontrolled fire in building or structure
  • any associated cataclysm

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (1 note)
Inherited from X00–X08 Exposure to smoke, fire and flames

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from X00 Exposure to uncontrolled fire in building or structure
  • Exposure to ignition or melting of nightwear (X05)
  • Exposure to ignition or melting of other clothing and apparel (X06.-)
  • Exposure to other specified smoke, fire and flames (X08.-)
Also from chapter/block level (3 notes)
Inherited from X00–X08 Exposure to smoke, fire and flames
  • explosions (W35-W40)
  • lightning (T75.0-)
  • transport accident (V01-V99)

Includes

Further defines or gives examples of the content of the category.

Inherited from X00 Exposure to uncontrolled fire in building or structure
  • conflagration in building or structure

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 20 External causes of morbidity
  • 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 codes under X00.3 3