X04 — Exposure to ignition of highly flammable material
X04 is a non-billable header ICD-10-CM code for exposure to ignition of highly flammable material. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to code X04
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Exposure to ignition of gasoline
- Exposure to ignition of kerosene
- Exposure to ignition of petrol
Risk adjustment
X04 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How X04 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to X04.
- Ignition›benzine
- Ignition›ether
- Ignition›gasoline
- Ignition›kerosene
- Ignition›paraffin
- Ignition›petrol
- Exposure›fire, flames›ignition of highly flammable material
- Ignition›apparel›from highly flammable material
- Ignition›material›highly flammable with secondary explosion
- Ignition›clothes, clothing NEC›from›highly flammable material
Code to one of these instead X04
3 child codes. Green means billable.
Questions about X04
- Is X04 a billable ICD-10-CM code?
- No. X04 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does X04 sit in the tabular list?
- External causes of morbidity (V00-Y99), in the block Exposure to smoke, fire and flames (X00-X08).