1. ICD-10-CM Codes
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2. I00-I99
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3. I30-I5A
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4. I49-
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5. 2023 ICD-10-CM Diagnosis Code I49.01

2023 ICD-10-CM Diagnosis Code I49.01

Ventricular fibrillation

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• 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.

• 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.

• 308 Cardiac arrhythmia and conduction disorders with mcc
• 309 Cardiac arrhythmia and conduction disorders with cc
• 310 Cardiac arrhythmia and conduction disorders without cc/mcc
• 791 Prematurity with major problems
• 793 Full term neonate with major problems

Convert I49.01 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• Fibrillation
  • ventricular I49.01

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.