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I44

Non-billable

Atrioventricular and left bundle-branch block

I44 is the ICD-10-CM code for Atrioventricular and left bundle-branch block. It is a non-billable category code — use a more specific child code such as I44.0 for billing.

Status
Header (non-billable)
Chapter
I00-I99
Subcodes
8
Edition
FY2026

I00-I99 Diseases of the circulatory system

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code I44?
I44 is the ICD-10-CM code for "Atrioventricular and left bundle-branch block". It falls under I00-I99 Diseases of the circulatory system.
Is I44 a billable code?
No — I44 is a non-billable header code. Use a more specific child code (such as I44.0) for billing.
What are the subcodes of I44?
I44 has 8 more specific child codes, including I44.0, I44.1, I44.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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