2025 CPT code 33240
(Active) Effective Date: N/A Revision Date: N/A Surgery - Surgical Procedures on the Cardiovascular System Feed
Insertion of implantable defibrillator pulse generator only; with existing single lead.
Modifiers may be applicable. Refer to the provided source or official CPT guidelines for detailed information.
Medical necessity is based on the patient's underlying heart condition and the need for continuous defibrillator therapy. Documentation should support the rationale for pulse generator replacement.
In simple words: The doctor replaces the battery pack (pulse generator) of a heart defibrillator that is already present under the skin, connected to a single wire (lead) going to the heart.This is done to ensure the defibrillator continues to work properly to correct irregular heartbeats.
This procedure involves the insertion of a new implantable defibrillator pulse generator in a subcutaneous pocket, typically in the front of the patient's chest. It is performed when the patient already has a single lead in place. The existing lead is detached from the old generator and attached to the new one, placed in the pocket. This procedure is done to regulate the patient's heart rate in cases of arrhythmia.
Example 1: A patient with an existing single-lead implantable defibrillator experiences battery depletion, requiring replacement of the pulse generator., A patient's implantable defibrillator malfunctions, necessitating replacement of the pulse generator while retaining the existing single lead., A patient with a single-lead defibrillator requires an upgrade to a newer model pulse generator for enhanced functionality or improved battery life.
Documentation should include the medical necessity for the procedure, the type of defibrillator and lead system used, operative details, and any complications encountered.
- Place of Service:Inpatient Hospital, Outpatient Hospital, Ambulatory Surgical Center