ICD-10-CM Code I44.4

Valid for Submission

I44.4 is a billable code used to specify a medical diagnosis of left anterior fascicular block. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code I44.4 might also be used to specify conditions or terms like bifascicular block, bifascicular block on electrocardiogram, ekg: left bundle branch block, ekg: left bundle branch block, ekg: right bundle branch block, left anterior fascicular block, etc

The code I44.4 is not usually sufficient justification for admission to an acute care hospital when used as a principal diagnosis.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I44.4 are found in the index:

• - Block, blocked
  • - bundle-branch (complete) (false) (incomplete) - I45.4
    • - left - I44.7
      • - hemiblock - I44.60
        • - anterior - I44.4
  • - fascicular (left) - I44.60
    • - anterior - I44.4

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

• Questionable admission codes - Some diagnoses are not usually sufficient justification for admission to an acute care hospital. For example, if a patient is given code R030 for elevated blood pressure reading, without diagnosis of hypertension, then the patient would have a questionable admission, since elevated blood pressure reading is not normally sufficient justification for admission to a hospital.

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Bifascicular block
• Bifascicular block on electrocardiogram
• EKG: left bundle branch block
• EKG: left bundle branch block
• EKG: right bundle branch block
• Left anterior fascicular block
• Left anterior fascicular block
• Left anterior fascicular block on electrocardiogram
• Left anterior fascicular block on electrocardiogram
• Monofascicular block
• Monofascicular block
• Right bundle branch block AND left anterior fascicular block
• Right bundle branch block and left anterior fascicular block on electrocardiogram
• Right bundle branch block with left bundle branch block

Diagnostic Related Groups

The ICD-10 code I44.4 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2020 through 09/30/2020.

• 308 - CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH MCC
• 309 - CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC
• 310 - CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITHOUT CC/MCC

Convert I44.4 to ICD-9

• 426.2 - Left bb hemiblock (Approximate Flag)

Code Classification

• Diseases of the circulatory system (I00–I99)
  • Other forms of heart disease (I30-I52)
    • Atrioventricular and left bundle-branch block (I44)

Code History

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
  (First year ICD-10-CM implemented into the HIPAA code set)
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Tools

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• Convert I44.4 to ICD-9