ICD-10 X03.1
Non-Billable HeaderExposure to smoke in controlled fire, not in building or structure
About ICD-10-CM X03.1
ICD-10-CM code X03.1 represents Exposure to smoke in controlled fire, not in building or structure. This is a non-billable header code in the External Causes of Morbidity chapter (block X03). The 2026 edition of ICD-10-CM X03.1 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Medicare LCD Coverage for X03.1
Local Coverage Determinations (LCDs) from CMS MACs that list X03.1 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing X03.1.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but X03.1 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with X03.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To X03.1
Other codes in section X00-X08 (Exposure to smoke, fire and flames).
ICD-10 X03.1, Billing FAQ
Is ICD-10 code X03.1 billable? +
No, X03.1 is a non-billable header code. Use a more specific child code from block X03 when submitting claims.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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