ICD10

ICD-10 Code X01: Exposure to uncontrolled fire, not in building or structure

X01 is an ICD-10 diagnosis entry used to group records related to Exposure to uncontrolled fire, not in building or structure. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for External causes of morbidity (V00-Y99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for External causes of morbidity (V00-Y99).

When is it used?

  • May be used when a clinician documents exposure to uncontrolled fire, not in building or structure in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter
20External causes of morbidity (V00-Y99)
block
V00-X58Accidents
block
W00-X58Other external causes of accidental injury
block
X00-X08Exposure to smoke, fire and flames
currentX00-X08

Official coding notes

Includes
  • exposure to forest fire
7th character notes
  • The appropriate 7th character is to be added to each code from category X01
  • initial encounter
  • subsequent encounter
  • sequela

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
X01
Replacement codes
X01.0 — Exposure to flames in uncontrolled fire, not in building or structureX01.1 — Exposure to smoke in uncontrolled fire, not in building or structureX01.3 — Fall due to uncontrolled fire, not in building or structureX01.4 — Hit by object due to uncontrolled fire, not in building or structureX01.8 — Other exposure to uncontrolled fire, not in building or structure

Common synonyms

Exposure to uncontrolled fire, not in building or structure

Frequently asked questions

Code details

CodeX01
SystemICD10
Display nameExposure to uncontrolled fire, not in building or structure
ChapterExternal causes of morbidity (V00-Y99)
BlockExposure to smoke, fire and flames

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code X01 for Exposure to uncontrolled fire, not in building or structure | HealthAssure