I49.3: Ventricular premature depolarization

You are having additional heartbeats.

Your heart is beating irregularly. You are sometimes having additional heartbeats that do not occur with the normal rhythm.

The heart pumps blood through the body. Inside the heart are 4 chambers. There are 2 heart atria and 2 ventricles. Both heart atria and both ventricles are separated from each other by a partition. The heart’s electrical activity originates in the right atrium. The heart’s electrical activity triggers the heartbeat. The activity then first spreads in the two atria. The activity then flows via a sort of cable from the atria to the ventricles.

You keep getting additional heartbeats in your heart’s ventricles.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information


This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.


Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).