ICD-10 W58
Non-Billable HeaderContact with crocodile or alligator
About ICD-10-CM W58
ICD-10-CM code W58 represents Contact with crocodile or alligator. This is a non-billable header code in the External Causes of Morbidity chapter (block W58). The 2026 edition of ICD-10-CM W58 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.
Coding Notes
Seven Chr Note
- The appropriate 7th character is to be added to each code from category W58
Medicare LCD Coverage for W58
Local Coverage Determinations (LCDs) from CMS MACs that list W58 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 W58.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but W58 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with W58
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 W58
Other codes in section W50-W64 (Exposure to animate mechanical forces).
ICD-10 W58, Billing FAQ
Is ICD-10 code W58 billable? +
No, W58 is a non-billable header code. Use a more specific child code from block W58 when submitting claims.
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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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