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X04 ICD-10-CA code: Exposure to ignition of highly flammable material

X04 is the ICD-10-CA code for “Exposure to ignition of highly flammable material” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

X04

Exposure to ignition of highly flammable material

Short description: Exp ignition highly flammable material

ICD-10-CA · Canada

Index terms

Entries in CIHI’s alphabetical index that lead to X04. Searching the index by the condition the note names is how coders reach this code.

  • Ignition (accidental), petrol
  • Ignition (accidental), benzine
  • Ignition (accidental), gasoline
  • Ignition (accidental), kerosene
  • Ignition (accidental), paraffin
  • Ignition (accidental), apparel NEC, from highly flammable material
  • Ignition (accidental), material, highly flammable (with secondary explosion)
  • Ignition (accidental), clothes, clothing NEC (from controlled fire), from, highly flammable material
  • Burn, burned, burning (accidental) (by) (from) (on), ignition, highly flammable material (benzine) (fat) (gasoline) (kerosene) (paraffin) (petrol)
  • Exposure (to), fire (accidental) (with exposure to smoke or fumes or causing burns, or secondary explosion), ignition of highly flammable material

Notes for X04

As CIHI prints them, with any note X04 takes from the headings above it.

Includes

Use additional code

Add a code for this detail when the note documents it.

Excludes

Conditions classified elsewhere.

Note

  • This chapter, which in previous revisions of ICD constituted a supplementary classification, permits the classification of environmental events and circumstances as the cause of injury, poisoning and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used in addition to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter XIX, Injury, poisoning and certain other consequences of external causes (S00-T98). Causes of death should preferably be tabulated according to both Chapter XIX and Chapter XX, but if only one code is tabulated then the code from Chapter XX should be used in preference. 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 XX should be used to provide additional information for multiple-condition analysis only.From Chapter 20: External causes of morbidity and mortality (V01-Y98)

Where X04 sits

  1. 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
  2. 2Block V01-X59Accidents
  3. 3Block W00-X59Other external causes of accidental injury
  4. 4Block X00-X09Exposure to smoke, fire and flames
  5. 5Valid code X04Exposure to ignition of highly flammable material

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See X04 in the CIHI source

Frequently asked questions

What does ICD-10-CA code X04 mean?

X04 is the ICD-10-CA code for “Exposure to ignition of highly flammable material” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is X04 in ICD-10-CA?

X04 sits under X00-X09 Exposure to smoke, fire and flames, within W00-X59 Other external causes of accidental injury, within V01-X59 Accidents, within Chapter 20: External causes of morbidity and mortality (V01-Y98).

What coding notes apply to X04?

ICD-10-CA lists Includes, Use additional code, Excludes, Note notes for X04, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside X04

X00Exposure to uncontrolled fire in building or structureX01Exposure to uncontrolled fire, not in building or structureX02Exposure to controlled fire in building or structureX03Exposure to controlled fire, not in building or structureX05Exposure to ignition or melting of nightwearX06Exposure to ignition or melting of other clothing and apparelX08Exposure to other specified smoke, fire and flamesX09Exposure to unspecified smoke, fire and flames