I45.9

ICD-10Billable

Conduction disorder, unspecified

Official ICD-10-CM descriptor (FY2026)

Conduction disorder, unspecified

I45.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Heart block NOS
Stokes-Adams syndrome

Related codes in I45

I45.0Right fascicular block
I45.1Other and unspecified right bundle-branch blockcategory
I45.2Bifascicular block
I45.3Trifascicular block
I45.4Nonspecific intraventricular block
I45.5Other specified heart block
I45.6Pre-excitation syndrome
I45.8Other specified conduction disorderscategory

Where this code sits

Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: Other forms of heart disease (I30-I5A)
Parent code: I45

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.