All ICD10 Codes

I44

Non-Billable
ChapterI00–I99
Rankcategory
Official Description

Atrioventricular and left bundle-branch block

Use a more specific code (6 billable, 2 non-billable)
I44.0Atrioventricular block, first degreeI44.1Atrioventricular block, second degreeI44.2Atrioventricular block, completeI44.3Other and unspecified atrioventricular blockhas subcodesI44.4Left anterior fascicular blockI44.5Left posterior fascicular blockI44.6Other and unspecified fascicular blockhas subcodesI44.7Left bundle-branch block, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Clinical Hierarchy

BillableHas subcodes
CH9Diseases of the circulatory system (I00-I99)
I30-I5AOther forms of heart disease (I30-I5A)
I44Atrioventricular and left bundle-branch blockNot billable
I44.0Atrioventricular block, first degreeBillable
I44.1Atrioventricular block, second degreeBillable
I44.2Atrioventricular block, completeBillable
I44.3Other and unspecified atrioventricular blockSubcodes
I44.4Left anterior fascicular blockBillable
I44.5Left posterior fascicular blockBillable
I44.6Other and unspecified fascicular blockSubcodes
I44.7Left bundle-branch block, unspecifiedBillable

Applicable Ancestor Context

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

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

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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