ICD-10 I44
Non-Billable HeaderAtrioventricular and left bundle-branch block
About ICD-10-CM I44
ICD-10-CM code I44 represents Atrioventricular and left bundle-branch block. This is a non-billable header code in the Circulatory System chapter (block I44). The 2026 edition of ICD-10-CM I44 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.
Medicare LCD Coverage for I44
Local Coverage Determinations (LCDs) from CMS MACs that list I44 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 I44.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I44 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I44
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Codes Adjacent To I44
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I44, Billing FAQ
Is ICD-10 code I44 billable? +
No, I44 is a non-billable header code. Use a more specific child code from block I44 when submitting claims.
What CPT codes are commonly billed with I44? +
Procedures frequently paired with I44 include: 93010, 93613, 93616.
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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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