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Official Description

Insertion of intra-aortic balloon assist device through the femoral artery, open approach

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33970 involves the insertion of an intra-aortic balloon assist device (IABP) through the femoral artery using an open surgical approach. This procedure is typically performed to support patients with severe cardiac conditions, particularly those experiencing heart failure or undergoing high-risk cardiac surgeries. The IABP is designed to enhance coronary blood flow and improve cardiac output by inflating and deflating a balloon within the aorta in synchrony with the cardiac cycle. The inflation occurs during diastole, which increases blood flow to the coronary arteries, while deflation occurs during systole, assisting the heart in ejecting blood more efficiently. The procedure requires careful surgical techniques to expose the femoral artery, secure a vascular graft, and ensure proper placement of the balloon catheter within the descending aorta. This intervention is critical in managing patients with compromised cardiac function, as it can significantly reduce the workload on the heart and improve overall hemodynamic stability.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The insertion of an intra-aortic balloon assist device (IABP) through the femoral artery is indicated for patients experiencing severe cardiac conditions. The following are specific indications for this procedure:

  • Severe Heart Failure Patients with significant heart failure may require mechanical support to improve cardiac output and reduce the workload on the heart.
  • High-Risk Cardiac Surgery Individuals undergoing high-risk surgical procedures, such as coronary artery bypass grafting (CABG) or valve replacement, may benefit from IABP support to stabilize hemodynamics during surgery.
  • Cardiogenic Shock Patients in cardiogenic shock, where the heart is unable to pump sufficient blood to meet the body's needs, may require IABP to enhance perfusion and support vital organ function.

2. Procedure

The procedure for the insertion of the intra-aortic balloon assist device involves several critical steps, each performed with precision to ensure successful placement and function of the device:

  • Step 1: Incision and Exposure A longitudinal incision is made in the groin area over the femoral artery. This incision allows for direct access to the femoral artery, which is then carefully exposed and controlled to prevent excessive bleeding during the procedure.
  • Step 2: Vascular Graft Placement A vascular graft is sutured to the common femoral artery in an end-to-side fashion. This graft serves as a conduit for the intra-aortic balloon catheter, facilitating its advancement into the aorta.
  • Step 3: Balloon Catheter Introduction The intra-aortic balloon catheter is introduced into the femoral artery through the graft. The catheter is then advanced through the descending aorta until it reaches a position just below the left subclavian artery, ensuring optimal placement for effective balloon inflation and deflation.
  • Step 4: Securing the Graft The graft is secured to the distal end of the balloon catheter, ensuring that the device remains in place and functions correctly during the procedure.
  • Step 5: Connection to Balloon Pump Console The intra-aortic balloon pump catheter is then attached to the balloon pump console. This connection is crucial for the operation of the device, allowing for synchronized inflation and deflation of the balloon.

3. Post-Procedure

After the insertion of the intra-aortic balloon assist device, careful monitoring and post-procedure care are essential. The patient will typically be observed for any complications related to the procedure, such as bleeding or infection at the incision site. The IABP will be continuously monitored to ensure it is functioning correctly, with adjustments made as necessary to optimize cardiac support. Once the IABP is no longer needed, as indicated in CPT® Code 33971, the device will be removed, and the femoral artery will be repaired, which may involve suturing or the placement of a graft. Post-procedure recovery will include monitoring the patient's hemodynamic status and ensuring proper healing of the surgical site.

Short Descr AORTIC CIRCULATION ASSIST
Medium Descr INSJ INTRA-AORT BALO ASSIST DEV VIA FEM ART OPEN
Long Descr Insertion of intra-aortic balloon assist device through the femoral artery, open approach
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 49 - Other OR heart procedures
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
GC This service has been performed in part by a resident under the direction of a teaching physician
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2022-01-01 Changed AMA guideline removed.
2017-01-01 Changed Guidelines added.
Pre-1990 Added Code added.
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