Specific code icon 2014 ICD-10-CM Diagnosis Code I49.9

Cardiac arrhythmia, unspecified

  • I49.9 is a billable ICD-10-CM code that can be used to specify a diagnosis.
  • On October 1, 2015 ICD-10-CM will replace ICD-9-CM in the United States, therefore, I49.9 and all other ICD-10-CM codes should only be used for training or planning purposes until then.
Clinical Information
  • 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.
  • Any disturbances of the normal rhythmic beating of the heart or myocardial contraction. Cardiac arrhythmias can be classified by the abnormalities in heart rate, disorders of electrical impulse generation, or impulse conduction.
  • Any variation from the normal rate or rhythm (which may include the origin of the impulse and/or its subsequent propagation) in the heart.
  • Any variation from the normal rhythm or rate of the heart beat.
Applicable To
  • Arrhythmia (cardiac) NOS
Description Synonyms
  • Atrial arrhythmia
  • Cardiac arrhythmia
  • Cardiac arrythmia complicating childbirth
  • Cardiac arrythmia in childbirth
  • Cardiac dysrhythmia (heart rhythm disorder)
  • Conduction disorder of the heart
  • Conduction disorder of the heart postpartum
  • Neonatal (newborn) arrhythmia
  • Neonatal arrhythmia
  • Neonatal dysrhythmia
  • Postpartum (after childbirth) cardiac arrythmia
  • Postpartum cardiac arrythmia
  • Ventricular arrhythmia
  • Ventricular arrhythmia (heart beat disorder)
Mortality Data
  • Between 1999-2007 there were 74,163 deaths in the United States where ICD-10 I49.9 was indicated as the underlying cause of death [source: cdc.govlink to cdc.gov]
  • ICD-10 I49.9 as underlying cause of death data broken down by: gender, age, race, year
ICD-10-CM I49.9 is grouped within Diagnostic Related Group(s) (MS-DRG v30.0):
  • 308 Cardiac arrhythmia & conduction disorders with mcc
  • 309 Cardiac arrhythmia & conduction disorders with cc
  • 310 Cardiac arrhythmia & conduction disorders without cc/mcc
Convert ICD-10-CM I49.9 to ICD-9-CM
The following ICD-10-CM Index entries contain back-references to ICD-10-CM I49.9: