Specific code 2014 ICD-9-CM Diagnosis Code 427.31
Atrial fibrillation
  • Billable Code
  • ICD-9-CM 427.31 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 427.31 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • ATRIAL FIBRILLATION
  • Atrial fibrillation w rapid ventricular response
  • Atrial fibrillation with rapid ventricular response
  • Atrial fibrillation, chronic
  • Atrial fibrillation, paroxysmal
  • Chronic atrial fibrillation
  • Paroxysmal atrial fibrillation
Clinical Information
  • A disorder characterized by a dysrhythmia without discernible p waves and an irregular ventricular response due to multiple reentry circuits. The rhythm disturbance originates above the ventricles.
  • A supraventricular arrhythmia characterized by uncoordinated atrial myocardium activation due to multiple reentry circuits with consequent deterioration of atrial mechanical function. Instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often tachycardia ventricular rate. On the ecg it is described by the replacement of consistent p waves by rapid oscillations or fibrillatory waves that vary in size, shape, and timing, associated with an irregular, frequently rapid ventricular response when atrioventricular conduction is intact.
  • A supraventricular arrhythmia characterized by uncoordinated atrial myocardium activation due to multiple reentry circuits with consequent deterioration of atrial mechanical function. Instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often tachycardia ventricular rate. On the ecg it is described by the replacement of consistent p waves by rapid oscillations or fibrillatory waves that vary in size, shape, and timing, associated with an irregular, frequently rapid ventricular response when atrioventricular conduction is intact. (nci)
  • Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (heart atria). In such case, blood cannot be effectively pumped into the lower chambers of the heart (heart ventricles). It is caused by abnormal impulse generation.
  • An arrhythmia in which minute areas of the atrial myocardium are in various uncoordinated stages of depolarization and repolarization; instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often rapid ventricular rate.
  • An arrhythmia is a problem with the speed or rhythm of the heartbeat. Atrial fibrillation (af) is the most common type of arrhythmia. The cause is a disorder in the heart's electrical system.often, people who have af may not even feel symptoms. But you may feel
    • palpitations -- an abnormal rapid heartbeat
    • shortness of breath
    • weakness or difficulty exercising
    • chest pain
    • dizziness or fainting
    • fatigue
    • confusion
    af can lead to an increased risk of stroke. In many patients, it can also cause chest pain, heart attack, or heart failure. Doctors diagnose af using family and medical history, a physical exam, and a test called an electrocardiogram (ekg), which looks at the electrical waves your heart makes. Treatments include medicines and procedures to restore normal rhythm.
  • Disorder of cardiac rhythm characterized by rapid, irregular atrial impulses and ineffective atrial contractions.
  • Rapid tremor and shake of upper chambers of the heart
Convert to ICD-10-CM: 427.31 converts approximately to:
  • 2014 ICD-10-CM I48.91 Unspecified atrial fibrillation
ICD-9-CM Volume 2 Index entries containing back-references to 427.31:
  • Fibrillation
    • atrial (established) (paroxysmal) 427.31
    • auricular (atrial) (established) 427.31
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 427.31 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.