I44.3
⚠ Non-billable
Other and unspecified atrioventricular block
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I44.3
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Circulatory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code I44.3?
ICD-10-CM code I44.3 represents Other and unspecified atrioventricular block. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I44.3 billable?
No. I44.3 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is I44.3 in?
I44.3 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
Related codes in the I44 category
I44
Atrioventricular and left bundle-branch block
Non-billable
I44.0
Atrioventricular block, first degree
Billable
I44.1
Atrioventricular block, second degree
Billable
I44.2
Atrioventricular block, complete
Billable
I44.4
Left anterior fascicular block
Billable
I44.5
Left posterior fascicular block
Billable
I44.6
Other and unspecified fascicular block
Non-billable
I44.7
Left bundle-branch block, unspecified
Billable
Search all 98,186 ICD-10-CM codes instantly
Search ICDwise →