Non-Billable / Non-Specific Code
ICD-10-CM X00 is the diagnosis code for Exposure to uncontrolled fire in building or structure. This code falls under the section "Exposure to smoke, fire and flames" within Chapter 20 â External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in X00. If the patient has both, code each condition separately:
Understanding where X00 sits in the ICD-10-CM classification helps ensure proper coding:
No, X00 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
X00 is the ICD-10-CM diagnosis code for "Exposure to uncontrolled fire in building or structure". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
X00 is located in Section X00-X08 â "Exposure to smoke, fire and flames" within Chapter 20 of the ICD-10-CM Tabular List.
X00 has 7 sub-code(s) that provide more specific detail: X00.0, X00.1, X00.2, X00.3, X00.4 and more.
Use X00 when the patients documented diagnosis matches "Exposure to uncontrolled fire in building or structure" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Exposure to uncontrolled fire in building or structure is X00.
No, X00 is non-billable. Use a more specific sub-code for primary diagnosis billing.
X00 is in Chapter 20 of the ICD-10-CM Tabular List.
Yes, X00 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.