Cardiology Coding Alert

Beware: You won't see identical ICD-9 and ICD-10 inclusion lists.

When you code Wolff-Parkinson-White (WPW) syndrome under ICD-10, you might be surprised to see a code definition that doesn't match the one you know under ICD-9.

ICD-9 code: WPW falls under 426.7 (Anomalous atrioventricular excitation) in ICD-9. Anomalous atrioventricular excitation is a heart rhythm disorder. In WPW, the patient has an extra electrical pathway which can cause rapid heart rate.

Notes in ICD-9 tell you that 426.7 is appropriate for the following:

• Atrioventricular conduction:

• Ventricular pre-excitation
• Wolff-Parkinson-White syndrome.

ICD-10 code: When you start using ICD-10 [...]

- Published on 2011-10-10