I44.3Header code — not billable
Other and unspecified atrioventricular block
- Chapter
- 9. Diseases of the circulatory system
- Category
- I44
- Effective date
- October 1, 2026
Related codes in category I44
I44Atrioventricular and left bundle-branch blockI44.0Atrioventricular block, first degreeYesI44.1Atrioventricular block, second degreeYesI44.2Atrioventricular block, completeYesI44.30Unspecified atrioventricular blockYesI44.39Other atrioventricular blockYesI44.4Left anterior fascicular blockYesI44.5Left posterior fascicular blockYesI44.6Other and unspecified fascicular blockI44.60Unspecified fascicular blockYesI44.69Other fascicular blockYesI44.7Left bundle-branch block, unspecifiedYes
Frequently asked questions
What is ICD-10 code I44.3?
I44.3 is an ICD-10-CM diagnosis code for Other and unspecified atrioventricular block.
Is I44.3 a billable code?
No. I44.3 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is I44.3 in?
I44.3 falls under Chapter 9: Diseases of the circulatory system.
When did I44.3 become effective?
I44.3 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I44.3?
I44.3 belongs to category I44, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.