| I45 | Other conduction disorders | NON-BILLABLE CODE |
| I45.0 | Right fascicular block | BILLABLE CODE |
| I45.1 | Other and unspecified right bundle-branch block | NON-BILLABLE CODE |
| I45.10 | Unspecified right bundle-branch block | BILLABLE CODE |
| I45.2 | Bifascicular block | BILLABLE CODE |
| I45.3 | Trifascicular block | BILLABLE CODE |
| I45.4 | Nonspecific intraventricular block | BILLABLE CODE |
| I45.5 | Other specified heart block | BILLABLE CODE |
| I45.6 | Pre-excitation syndrome | BILLABLE CODE |
| I45.8 | Other specified conduction disorders | NON-BILLABLE CODE |
| I45.81 | Long QT syndrome | BILLABLE CODE |
| I45.89 | Other specified conduction disorders | BILLABLE CODE |
| I45.9 | Conduction disorder, unspecified | BILLABLE CODE |
