I45
⚠ Non-billable (Header)Other conduction disorders
Diseases of the circulatory system (I00-I99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for I45
Child Codes (9)
I45.0Right fascicular blockI45.1Other and unspecified right bundle-branch blockI45.2Bifascicular blockI45.3Trifascicular blockI45.4Nonspecific intraventricular blockI45.5Other specified heart blockI45.6Pre-excitation syndromeI45.8Other specified conduction disordersI45.9Conduction disorder, unspecified
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CodeI45
BillableNo — Header code
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes9
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)