X00Header code — not billable
Exposure to uncontrolled fire in building or structure
- Chapter
- 20. External causes of morbidity
- Category
- X00
- Effective date
- October 1, 2026
Related codes in category X00
X00.0Exposure to flames in uncontrolled fire in bldgX00.0XXAExposure to flames in uncontrolled fire in bldg, initYesX00.0XXDExposure to flames in uncontrolled fire in bldg, subsYesX00.0XXSExposure to flames in uncontrolled fire in bldg, sequelaYesX00.1Exposure to smoke in uncontrolled fire in bldgX00.1XXAExposure to smoke in uncontrolled fire in bldg, initYesX00.1XXDExposure to smoke in uncontrolled fire in bldg, subsYesX00.1XXSExposure to smoke in uncontrolled fire in bldg, sequelaYesX00.2Injury due to collapse of burning bldg in uncontrolled fireX00.2XXAInjury due to collapse of burn bldg in uncntrld fire, initYesX00.2XXDInjury due to collapse of burn bldg in uncntrld fire, subsYesX00.2XXSInjury due to collapse of burn bldg in uncntrld fire, sqlaYes
Frequently asked questions
What is ICD-10 code X00?
X00 is an ICD-10-CM diagnosis code for Exposure to uncontrolled fire in building or structure.
Is X00 a billable code?
No. X00 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is X00 in?
X00 falls under Chapter 20: External causes of morbidity.
When did X00 become effective?
X00 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to X00?
X00 belongs to category X00, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.