2012 ICD-9-CM Diagnosis Code 427.31
Atrial fibrillation
- disorder of cardiac rhythm characterized by rapid, irregular atrial impulses and ineffective atrial contractions.
- 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.
- 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)
- ICD-9-CM 427.31 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
- You are viewing the 2012 version of ICD-9-CM 427.31.
- More recent version(s) of ICD-9-CM 427.31: 2013.
427.31 Alternative Terminology
Convert 427.31 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 427.31:
atrial (established) (paroxysmal) 
auricular (atrial) (established) 
