ICD-10 I46
Non-Billable HeaderCardiac arrest
About ICD-10-CM I46
ICD-10-CM code I46 represents Cardiac arrest. This is a non-billable header code in the Circulatory System chapter (block I46). The 2026 edition of ICD-10-CM I46 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.
Type 2 Excludes
Not included here, the excluded code is not part of I46, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- cardiogenic shock (R57.0)
Medicare LCD Coverage for I46
Local Coverage Determinations (LCDs) from CMS MACs that list I46 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 I46.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I46 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I46
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Codes Adjacent To I46
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I46, Billing FAQ
Is ICD-10 code I46 billable? +
No, I46 is a non-billable header code. Use a more specific child code from block I46 when submitting claims.
What codes are Type 2 Excludes for I46? +
Type 2 Excludes (may be coded together when both conditions exist): cardiogenic shock (R57.0)
What CPT codes are commonly billed with I46? +
Procedures frequently paired with I46 include: 93010, 93613, 93616.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 2, 2026.
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