ICD-10 S20.362
Non-Billable HeaderInsect bite (nonvenomous) of left front wall of thorax
About ICD-10-CM S20.362
ICD-10-CM code S20.362 represents Insect bite (nonvenomous) of left front wall of thorax. This is a non-billable header code in the Injury, Poisoning, and External Causes chapter (block S20). The 2026 edition of ICD-10-CM S20.362 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 Tips for S20.362
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
Injury codes require a 7th character: A (initial encounter, active treatment), D (subsequent, healing/recovery), S (sequela, late effect of original injury). Codes with fewer than 6 characters need the placeholder X to bring them to 6 characters before adding the 7th. Wrong or missing 7th character is the #1 cause of injury claim denials.
Medicare LCD Coverage for S20.362
Local Coverage Determinations (LCDs) from CMS MACs that list S20.362 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 S20.362.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but S20.362 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with S20.362
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 S20.362
Other codes in section S20-S29 (Injuries to the thorax).
ICD-10 S20.362, Billing FAQ
Is ICD-10 code S20.362 billable? +
No, S20.362 is a non-billable header code. Use a more specific child code from block S20 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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