ICD-10 S25
Non-Billable HeaderInjury of blood vessels of thorax
About ICD-10-CM S25
ICD-10-CM code S25 represents Injury of blood vessels of thorax. This is a non-billable header code in the Injury, Poisoning, and External Causes chapter (block S25). The 2026 edition of ICD-10-CM S25 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 S25
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.
Coding Notes
Code Also
- any associated open wound (S21.-)
Seven Chr Note
- The appropriate 7th character is to be added to each code from category S25
Medicare LCD Coverage for S25
Local Coverage Determinations (LCDs) from CMS MACs that list S25 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 S25.
1 Aetna
2 Cigna
4 Humana
CPT Codes Commonly Billed with S25
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 S25
Other codes in section S20-S29 (Injuries to the thorax).
ICD-10 S25, Billing FAQ
Is ICD-10 code S25 billable? +
No, S25 is a non-billable header code. Use a more specific child code from block S25 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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