I44.7

Billable
ChapterI00–I99
Ranksubcategory
Official Description

Left bundle-branch block, unspecified

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).
General instructions are available for the parent sections:
View CH9 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)
I30-I5AOther forms of heart disease (I30-I5A)
I44Atrioventricular and left bundle-branch block
I44.7Left bundle-branch block, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I44.7:

chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I44.7. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

2 raw paths
Block, blocked2 unique routes
bundle-branch (complete) (false) (incomplete)(2 variants)
left→I44.7(2 variants)
incomplete→I44.7

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 308
Cardiac Arrhythmia and Conduction Disorders with MCC
DRG 309
Cardiac Arrhythmia and Conduction Disorders with CC
DRG 310
Cardiac Arrhythmia and Conduction Disorders without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Left bundle-branch block, unspecified.

Search PCS Codes