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Diagnosis Code

I49.9 CARDIAC ARRHYTHMIA, UNSPECIFIED


Code Information

Diagnosis Code: I49.9

Short Description: Cardiac arrhythmia, unspecified

Long Description: Cardiac arrhythmia, unspecified

The code I49.9 is VALID for claim submission

Code Classification:

  • Diseases of the circulatory system (I00–I99)
    • Other forms of heart disease (I30-I5A)
      • Other cardiac arrhythmias (I49)
        • I49.9 Cardiac arrhythmia, unspecified

Code Version: 2022 ICD-10-CM


Synonyms

  • Abnormal heart beat
  • Abnormal heart beat
  • Arrhythmia due to and following acute myocardial infarction
  • Arrhythmia due to vegetation of infective endocarditis
  • Atypical Timothy syndrome
  • Cardiac arrhythmia
  • Cardiac arrhythmia associated with genetic disorder
  • Cardiac arrhythmia due to coronary artery spasm
  • Cardiac arrhythmia in mother complicating childbirth
  • Cardiac channelopathy
  • EKG: ventricular arrhythmia
  • Fibrillation
  • Finding of regularity of heart rhythm
  • Finding of regularity of heart rhythm
  • GNB5-related intellectual disability, cardiac arrhythmia syndrome
  • Heart disease in mother complicating childbirth
  • Heart disease in mother complicating pregnancy, childbirth AND/OR puerperium
  • Heart irregularly irregular
  • Heart regularly irregular
  • Irregular heart beat
  • Irregular heart beat
  • Postoperative cardiac arrhythmia
  • Recurrent metabolic encephalomyopathic crises, rhabdomyolysis, cardiac arrhythmia, intellectual disability syndrome
  • Sudden arrhythmic death syndrome
  • Sudden cardiac death
  • Supraventricular arrhythmia
  • Timothy syndrome
  • Ventricular arrhythmia
  • Withdrawal arrhythmia

Diagnostic Related Group(s)

The code I49.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Cardiac Arrhythmia And Conduction Disorders With Mcc (308)
  • Cardiac Arrhythmia And Conduction Disorders With Cc (309)
  • Cardiac Arrhythmia And Conduction Disorders Without Cc/mcc (310)

References to Index of Diseases and Injuries

The code I49.9 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Arrhythmia (cardiac) NOS

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
I49.9 Right Arrow 427.9 Cardiac dysrhythmia NOS

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
I49 Other cardiac arrhythmias
I49.0 Ventricular fibrillation and flutter
I49.01 Ventricular fibrillation
I49.02 Ventricular flutter
I49.1 Atrial premature depolarization
I49.2 Junctional premature depolarization
I49.3 Ventricular premature depolarization
I49.4 Other and unspecified premature depolarization
I49.40 Unspecified premature depolarization
I49.49 Other premature depolarization
I49.5 Sick sinus syndrome
I49.8 Other specified cardiac arrhythmias

This page was last updated on: 10/1/2023

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