I49.01

Clinical Information

• A cardiac rhythm characterized by rapid, usually more than 300 bpm cycle length: 180 ms or less), grossly irregular ventricular rhythm with marked variability in qrs cycle length, morphology, and amplitude.

• A disorder characterized by a dysrhythmia without discernible qrs complexes due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricles.

• A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses 400-600/min) in heart ventricles. Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness syncope). It is one of the major electrocardiographic patterns seen with cardiac arrest.

• An arrhythmia characterized by an irregular pattern of high or low-amplitude waves that cannot be differentiated into qrs complexes or t waves. These electrocardiographic waves occur as a result of fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.

• Arrhythmia characterized by fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.

Details

• I49.01 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM I49.01 became effective on October 1, 2022.

• This is the American ICD-10-CM version of I49.01 – other international versions of ICD-10 I49.01 may differ.