MCMCB Pro
X03

X03Exposure to controlled fire, not in building or structure

Non-billable headerICD-10-CM

X03 is a non-billable header ICD-10-CM code for exposure to controlled fire, not in building or structure. 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 each code from category X03

A
initial encounter
D
subsequent encounter
S
sequela

Includes

Conditions this code covers.

  • exposure to bon fire
  • exposure to camp-fire
  • exposure to trash fire

Risk adjustment

X03 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.

Code to one of these instead X03

5 child codes. Green means billable.

Questions about X03

Is X03 a billable ICD-10-CM code?
No. X03 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does X03 sit in the tabular list?
External causes of morbidity (V00-Y99), in the block Exposure to smoke, fire and flames (X00-X08).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.