X00.1 – Exposure to smoke in uncontrolled fire in building or structure
ICD-10-CM 2027 diagnosis code · Exposure to smoke, fire and flames
- Code
X00.1(claims format:X001)- Description
- Exposure to smoke in uncontrolled fire in building or structure
- Short description
- Exposure to smoke in uncontrolled fire in bldg
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 20. External causes of morbidity (V00-Y99)
- Block
- X00-X08 Exposure to smoke, fire and flames
- Parent codes
- X00
Billable codes under X00.1
X00.1 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
X00 – Exposure to uncontrolled fire in building or structure
- conflagration in building or structure
- any associated cataclysm
- The appropriate 7th character is to be added to each code from category X00
Block X00-X08
- arson (X97)
Related codes in X00
- X00.0 – Exposure to flames in uncontrolled fire in building or structureHeader
- X00.2 – Injury due to collapse of burning building or structure in uncontrolled fireHeader
- X00.3 – Fall from burning building or structure in uncontrolled fireHeader
- X00.4 – Hit by object from burning building or structure in uncontrolled fireHeader
- X00.5 – Jump from burning building or structure in uncontrolled fireHeader
- X00.8 – Other exposure to uncontrolled fire in building or structureHeader
Frequently asked questions
What is ICD-10 code X00.1?
X00.1 is the ICD-10-CM code for exposure to smoke in uncontrolled fire in building or structure, in the block X00-X08 (Exposure to smoke, fire and flames).
Is X00.1 a billable code?
No. X00.1 is a header code with more specific child codes; report one of the billable codes listed above.
What category does X00.1 belong to?
It belongs to category X00 – Exposure to uncontrolled fire in building or structure.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.