X04: Exposure to ignition of highly flammable material
Codes under X04 (Exposure to ignition of highly flammable material). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| X04.XXXA | Exposure to ignition of highly flammable material, initial encounter | ✓ |
| X04.XXXA | Exposure to ignition of highly flammable material, initial encounter | ✓ |
| X04.XXXD | Exposure to ignition of highly flammable material, subsequent encounter | ✓ |
| X04.XXXD | Exposure to ignition of highly flammable material, subsequent encounter | ✓ |
| X04.XXXS | Exposure to ignition of highly flammable material, sequela | ✓ |
| X04.XXXS | Exposure to ignition of highly flammable material, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code X04?
X04 is an ICD-10-CM category covering Exposure to ignition of highly flammable material. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is X04 a billable code?
No — X04 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example X04.XXXA — Exposure to ignition of highly flammable material, initial encounter). 6 of the 6 codes under X04 are billable.
What codes fall under X04?
X04 includes X04.XXXA, X04.XXXA, X04.XXXD, X04.XXXD, X04.XXXS, plus 1 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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