I45.8Header code — not billable
Other specified conduction disorders
- Chapter
- 9. Diseases of the circulatory system
- Category
- I45
- Effective date
- October 1, 2026
Related codes in category I45
I45Other conduction disordersI45.0Right fascicular blockYesI45.1Other and unspecified right bundle-branch blockI45.10Unspecified right bundle-branch blockYesI45.19Other right bundle-branch blockYesI45.2Bifascicular blockYesI45.3Trifascicular blockYesI45.4Nonspecific intraventricular blockYesI45.5Other specified heart blockYesI45.6Pre-excitation syndromeYesI45.81Long QT syndromeYesI45.89Other specified conduction disordersYes
Frequently asked questions
What is ICD-10 code I45.8?
I45.8 is an ICD-10-CM diagnosis code for Other specified conduction disorders.
Is I45.8 a billable code?
No. I45.8 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 I45.8 in?
I45.8 falls under Chapter 9: Diseases of the circulatory system.
When did I45.8 become effective?
I45.8 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I45.8?
I45.8 belongs to category I45, 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.