ICD-10 T65.1X1
Non-Billable HeaderToxic effect of strychnine and its salts, accidental (unintentional)
About ICD-10-CM T65.1X1
ICD-10-CM code T65.1X1 represents Toxic effect of strychnine and its salts, accidental (unintentional). This is a non-billable header code in the Injury, Poisoning, and External Causes chapter (block T65). The 2026 edition of ICD-10-CM T65.1X1 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 T65.1X1
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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under T65.1X1. Per CMS ICD-10-CM Tabular 2026.
- Toxic effect of strychnine and its salts NOS
Medicare LCD Coverage for T65.1X1
Local Coverage Determinations (LCDs) from CMS MACs that list T65.1X1 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 T65.1X1.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but T65.1X1 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with T65.1X1
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 T65.1X1
Other codes in section T51-T65 (Toxic effects of substances chiefly nonmedicinal as to source).
ICD-10 T65.1X1, Billing FAQ
Is ICD-10 code T65.1X1 billable? +
No, T65.1X1 is a non-billable header code. Use a more specific child code from block T65 when submitting claims.
What other names or terms map to T65.1X1? +
ICD-10 T65.1X1 includes: Toxic effect of strychnine and its salts NOS.
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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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