X00
ICD-10Non-billable categoryExposure to uncontrolled fire in building or structure
Official ICD-10-CM descriptor (FY2026)
Exposure to uncontrolled fire in building or structure
X00 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- conflagration in building or structure
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- Exposure to ignition or melting of nightwear (X05)
- Exposure to ignition or melting of other clothing and apparel (X06.-)
- Exposure to other specified smoke, fire and flames (X08.-)
Code first
Sequence the underlying condition before this code.
- any associated cataclysm
7th character
- The appropriate 7th character is to be added to each code from category X00
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under X00
- X00.0Exposure to flames in uncontrolled fire in bldgcategory
- X00.1Exposure to smoke in uncontrolled fire in bldgcategory
- X00.2Injury due to collapse of burning bldg in uncontrolled firecategory
- X00.3Fall from burning building or structure in uncontrolled firecategory
- X00.4Hit by object from burning bldg in uncontrolled firecategory
- X00.5Jump from burning building or structure in uncontrolled firecategory
- X00.8Other exposure to uncontrolled fire in building or structurecategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.