ICD-10-CM · Chapter 9 · I00-I99
I44 Atrioventricular and left bundle-branch block
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| I44..0 | Atrioventricular block, first degree | Yes |
| I44..1 | Atrioventricular block, second degree | Yes |
| I44..2 | Atrioventricular block, complete | Yes |
| I44..3 | Other and unspecified atrioventricular block | No |
| I44..30 | Unspecified atrioventricular block | Yes |
| I44..39 | Other atrioventricular block | Yes |
| I44..4 | Left anterior fascicular block | Yes |
| I44..5 | Left posterior fascicular block | Yes |
| I44..6 | Other and unspecified fascicular block | No |
| I44..60 | Unspecified fascicular block | Yes |
| I44..69 | Other fascicular block | Yes |
| I44..7 | Left bundle-branch block, unspecified | Yes |
Last reviewed: September 2026