Cardiology Coding Alert

ICD-10-CM:

I49.0- Will Keep Your Ventricular Flutter and Fibrillation Claims in the Clear Under ICD-10

Be sure any abbreviations are clear enough to pass the auditor test.

The ICD-10 to ICD-9 crosswalk for ventricular flutter and fibrillation is a simple one, but you still need to be sure you can identify the difference between these two diagnoses, including in the documentation.

ICD-9-CM Codes

  • 427.41, Ventricular fibrillation
  • 427.42, Ventricular flutter

ICD-10-CM Codes

  • I49.01, Ventricular fibrillation
  • I49.02, Ventricular flutter

Ventricular fibrillation involves rapid uncoordinated contractions of the lower heart chambers (ventricles), which can be fatal if not stopped. The chambers jiggle rather than beat. Ventricular flutter is similar in that it involves rapid heart rate beginning in the ventricles, but in flutter the heart continues to beat. Flutter may degenerate into ventricular fibrillation.

ICD-9 coding rules: ICD-9 offers separate codes for fibrillation and flutter. An excludes note under 427 (Cardiac dysrhythmias) tells you to look elsewhere if the diagnosis is one complicating abortion, ectopic or molar pregnancy, or labor or delivery.

ICD-10 changes: ICD-10 also offers separate codes for fibrillation and flutter involving the ventricles. As with the ICD-9 range, notes for the ICD-10 range reference proper coding for arrhythmia related to obstetric encounters. For ICD-10, you should “code first” tachycardia complicating:

  • Abortion or ectopic or molar pregnancy (O00-O07, O08.8)
  • Obstetric surgery and procedures (O75.4).

Documentation: Your provider’s documentation will not need to change for you to find the appropriate ICD-10 code, assuming it is currently sufficient. 

Coder tips: Providers use a variety of abbreviations for ventricular fibrillation and flutter. You may see VFib or V-Fib for ventricular fibrillation. Ventricular flutter may be abbreviated as VFL, V-FLUT, or V-flutter. Be alert for use of VF — one provider may use this for ventricular fibrillation while another may use it for ventricular flutter. If your providers choose to use abbreviations, be sure they use ones that won’t cause confusion or doubt. Auditors will want to see clear documentation.

Remember: Congress has delayed the ICD-10 compliance date of Oct. 1, 2014, until at least Oct. 1, 2015. When ICD-10-CM goes into effect, you should apply the code set and official guidelines in effect for the date of service reported. Learn more at www.cms.gov/ICD10/ and www.cdc.gov/nchs/icd/icd10cm.htm#10update.