2025 CPT code 33973

Insertion of intra-aortic balloon assist device through the ascending aorta.

This code is used for insertion only. Removal is reported separately (33974). If performed during other cardiac procedures, this code may be reported in addition to the primary procedure code.

Modifiers may be applicable to indicate unusual circumstances, such as increased procedural services (modifier 22).

Medical necessity is established by documenting the patient's clinical condition requiring hemodynamic support (e.g., cardiogenic shock, high-risk cardiac surgery) and why traditional femoral access isn't possible.

The surgeon makes an incision in the ascending aorta, selects the appropriate balloon size, secures a graft to the aortotomy, inserts the balloon catheter through the graft into the aorta, positions the balloon, and brings the catheter out through the skin. The surgeon may close the chest or leave it open if re-entry is anticipated.

In simple words: The doctor inserts a balloon pump into a major heart artery through a small cut in the chest. This helps the heart pump blood more effectively when it's struggling.

This code describes a procedure where an intra-aortic balloon pump (IABP) is inserted through an incision in the ascending aorta to provide hemodynamic support. This approach is typically used when femoral access isn't feasible.

Example 1: A patient experiencing cardiogenic shock after a heart attack requires hemodynamic support, but femoral access is unsuitable due to peripheral artery disease. An IABP is inserted through the ascending aorta., During a complex cardiac surgery, a patient develops acute heart failure. The surgeon decides to insert an IABP via the ascending aorta for immediate support., A patient with an aortic aneurysm requires surgery, and the surgeon anticipates difficulty with postoperative cardiac function. An IABP is inserted through the ascending aorta during the procedure to ensure adequate blood flow after surgery.

Documentation should include the reason for ascending aortic access, the size of the balloon, details of the insertion procedure, and any associated complications.

  • Revenue Code: P2F
  • Specialties:Cardiothoracic Surgery, Cardiac Surgery
  • Place of Service:Inpatient Hospital
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