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  6. 2024 ICD-10-CM Code I49
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code I49

Other cardiac arrhythmias

ICD-10-CM Code:
I49
ICD-10 Code for:
Other cardiac arrhythmias
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the circulatory system
    (I00–I99)
    • Other forms of heart disease
      (I30-I5A)
      • Other cardiac arrhythmias
        (I49)

I49 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other cardiac arrhythmias. The code is not specific and is NOT valid for the year 2024 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 Other cardiac arrhythmias

Non-specific codes like I49 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 other cardiac arrhythmias:

  • I49.0 for Ventricular fibrillation and flutter - NON-BILLABLE CODE

  • Use I49.01 for Ventricular fibrillation - BILLABLE CODE

  • Use I49.02 for Ventricular flutter - BILLABLE CODE

  • Use I49.1 for Atrial premature depolarization - BILLABLE CODE

  • Use I49.2 for Junctional premature depolarization - BILLABLE CODE

  • Use I49.3 for Ventricular premature depolarization - BILLABLE CODE

  • I49.4 for Other and unspecified premature depolarization - NON-BILLABLE CODE

  • Use I49.40 for Unspecified premature depolarization - BILLABLE CODE

  • Use I49.49 for Other premature depolarization - BILLABLE CODE

  • Use I49.5 for Sick sinus syndrome - BILLABLE CODE

  • Use I49.8 for Other specified cardiac arrhythmias - BILLABLE CODE

  • Use I49.9 for Cardiac arrhythmia, unspecified - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • cardiac arrhythmia complicating:
  • abortion or ectopic or molar pregnancy O00 O07 O08.8
  • obstetric surgery and procedures O75.4

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • neonatal dysrhythmia P29.1
  • sinoatrial bradycardia R00.1
  • sinus bradycardia R00.1
  • vagal bradycardia R00.1

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

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.