ICD-10 X38
Non-Billable HeaderFlood
About ICD-10-CM X38
ICD-10-CM code X38 represents Flood. This is a non-billable header code in the External Causes of Morbidity chapter (block X38). The 2026 edition of ICD-10-CM X38 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under X38. Per CMS ICD-10-CM Tabular 2026.
- Flood arising from remote storm
- Flood of cataclysmic nature arising from melting snow
- Flood resulting directly from storm
Type 1 Excludes
Pure excludes, these codes can never be coded together with X38. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- collapse of dam or man-made structure causing earth movement (X36.0)
- tidal wave NOS (X37.41)
- tidal wave caused by storm (X37.42)
Coding Notes
Seven Chr Note
- The appropriate 7th character is to be added to code X38
Medicare LCD Coverage for X38
Local Coverage Determinations (LCDs) from CMS MACs that list X38 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 X38.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but X38 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with X38
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 X38
Other codes in section X30-X39 (Exposure to forces of nature).
ICD-10 X38, Billing FAQ
Is ICD-10 code X38 billable? +
No, X38 is a non-billable header code. Use a more specific child code from block X38 when submitting claims.
What other names or terms map to X38? +
ICD-10 X38 includes: Flood arising from remote storm; Flood of cataclysmic nature arising from melting snow; Flood resulting directly from storm.
What codes are Type 1 Excludes for X38? +
Type 1 Excludes (never code together with X38): collapse of dam or man-made structure causing earth movement (X36.0); tidal wave NOS (X37.41); tidal wave caused by storm (X37.42)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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