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  6. 2025 ICD-10-CM Code I44

2025 ICD-10-CM Diagnosis Code I44

Atrioventricular and left bundle-branch block

ICD-10-CM Code:
I44
ICD-10 Code for:
Atrioventricular and left bundle-branch block
Is Billable?
Not Valid for Submission
Code Navigator:

I44 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of atrioventricular and left bundle-branch block. The code is not specific and is NOT valid for the year 2025 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Atrioventricular and left bundle-branch block

Non-specific codes like I44 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for atrioventricular and left bundle-branch block:

  • Use I44.0 for Atrioventricular block, first degree - BILLABLE CODE

  • Use I44.1 for Atrioventricular block, second degree - BILLABLE CODE

  • Use I44.2 for Atrioventricular block, complete - BILLABLE CODE

  • I44.3 for Other and unspecified atrioventricular block - NON-BILLABLE CODE

  • Use I44.30 for Unspecified atrioventricular block - BILLABLE CODE

  • Use I44.39 for Other atrioventricular block - BILLABLE CODE

  • Use I44.4 for Left anterior fascicular block - BILLABLE CODE

  • Use I44.5 for Left posterior fascicular block - BILLABLE CODE

  • I44.6 for Other and unspecified fascicular block - NON-BILLABLE CODE

  • Use I44.60 for Unspecified fascicular block - BILLABLE CODE

  • Use I44.69 for Other fascicular block - BILLABLE CODE

  • Use I44.7 for Left bundle-branch block, unspecified - BILLABLE CODE

Code Classification

  • Diseases of the circulatory system
    I00–I99
    • Other forms of heart disease
      I30-I5A
      • Atrioventricular and left bundle-branch block
        I44

Patient Education


Arrhythmia

An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern. When the heart beats faster than normal, it is called tachycardia. When the heart beats too slowly, it is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and fast heart beat.

Many factors can affect your heart's rhythm, such as having had a heart attack, smoking, congenital heart defects, and stress. Some substances or medicines may also cause arrhythmias.

Symptoms of arrhythmias include:

  • Fast or slow heart beat
  • Skipping beats
  • Lightheadedness or dizziness
  • Chest pain
  • Shortness of breath
  • Sweating

Your doctor can run tests to find out if you have an arrhythmia. Treatment to restore a normal heart rhythm may include medicines, an implantable cardioverter-defibrillator (ICD) or pacemaker, or sometimes surgery.

NIH: National Heart, Lung, and Blood Institute


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.