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Official Description

Endovascular repair of infrarenal aorta and/or iliac artery(ies) by deployment of an aorto-uni-iliac endograft including pre-procedure sizing and device selection, all nonselective catheterization(s), all associated radiological supervision and interpretation, all endograft extension(s) placed in the aorta from the level of the renal arteries to the iliac bifurcation, and all angioplasty/stenting performed from the level of the renal arteries to the iliac bifurcation; for rupture including temporary aortic and/or iliac balloon occlusion, when performed (eg, for aneurysm, pseudoaneurysm, dissection, penetrating ulcer, traumatic disruption)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 34704 refers to the endovascular repair procedure of the infrarenal aorta and/or iliac artery(ies) utilizing an aorto-uni-iliac endograft. This procedure is critical in managing vascular conditions such as aneurysms, pseudoaneurysms, dissections, penetrating ulcers, and traumatic disruptions. The endograft is a specialized device made from a non-permeable polyester material, which is supported by a self-expanding flexible metal frame. This design allows for a gradual tapering from the aortic attachment site down to the iliac artery attachment site, facilitating a secure fit within the vascular anatomy. The procedure can be performed either as a preventive measure prior to an aortic rupture, aimed at reducing pressure on the vessel and minimizing the risk of further dilation and rupture, or as an urgent intervention following a rupture to effectively seal the damaged vessel and control hemorrhaging. The deployment of the endograft involves the introduction of a guidewire into the abdominal aorta through the femoral artery or distal external iliac artery, followed by the positioning of the endograft using fluoroscopic guidance. Once positioned, the endograft is partially deployed, ensuring that the upper aortic portion is correctly placed proximally to the non-aneurysmal aortic neck and distally to the iliac artery. A balloon is then utilized to expand the graft against the vessel wall, ensuring a tight seal from proximal to distal. In cases of rupture, rapid control of hemorrhaging is paramount; if the endograft cannot be deployed quickly enough, a balloon occlusion device may be inflated in the aorta proximal to the rupture site to manage bleeding. Additionally, the placement of the aorto-uni-iliac endograft necessitates the occlusion of the contralateral common iliac artery with an endovascularly placed device, along with the restoration of blood flow to the lower limb through a conventional femoral-femoral crossover bypass graft.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The endovascular repair of the infrarenal aorta and/or iliac artery(ies) using an aorto-uni-iliac endograft is indicated for several critical vascular conditions. These include:

  • Aneurysm - A localized enlargement of the aorta that can lead to rupture if not treated.
  • Pseudoaneurysm - A false aneurysm that occurs when blood leaks out of the artery but is contained by surrounding tissue.
  • Dissection - A serious condition where there is a tear in the artery wall, allowing blood to flow between the layers of the wall.
  • Pentrating ulcer - A condition where an ulcer penetrates the arterial wall, potentially leading to rupture.
  • Traumatic disruption - Injury to the aorta or iliac arteries that may result from blunt or penetrating trauma.

2. Procedure

The procedure for endovascular repair of the infrarenal aorta and/or iliac artery(ies) involves several critical steps:

  • Step 1: Pre-Procedure Sizing and Device Selection - Prior to the procedure, careful sizing of the aorta and iliac arteries is performed to select the appropriate aorto-uni-iliac endograft. This ensures that the device will fit securely within the vascular anatomy.
  • Step 2: Catheterization - Nonselective catheterization is performed to access the vascular system. This step is crucial for the introduction of the guidewire and endograft.
  • Step 3: Guidewire Introduction - A guidewire is introduced into the abdominal aorta through either the femoral artery or the distal external iliac artery. This guidewire serves as a pathway for the endograft.
  • Step 4: Endograft Deployment - The aorto-uni-iliac endograft is introduced over the guidewire and positioned using fluoroscopic guidance. The upper aortic portion of the device is positioned proximally to the non-aneurysmal aortic neck and distally to the iliac artery.
  • Step 5: Graft Expansion - A balloon is introduced and used to expand the graft against the vessel wall in a proximal to distal direction. This step is essential to ensure a tight seal between the graft and the vessel wall.
  • Step 6: Management of Rupture - In cases of rupture, rapid control of hemorrhaging is critical. If the endograft cannot be deployed swiftly, a balloon occlusion device is placed and inflated in the aorta proximal to the rupture site to control bleeding.
  • Step 7: Contralateral Common Iliac Artery Occlusion - The placement of the aorto-uni-iliac endograft requires occlusion of the contralateral common iliac artery with an endovascularly placed device to prevent complications.
  • Step 8: Restoration of Blood Flow - Finally, blood flow to the lower limb is restored using a conventional femoral-femoral crossover bypass graft, ensuring adequate perfusion post-procedure.

3. Post-Procedure

After the endovascular repair procedure, patients are typically monitored for any complications, including bleeding or graft-related issues. Recovery may involve observation in a hospital setting to ensure that the graft is functioning properly and that there are no signs of complications. Patients may be advised on activity restrictions and follow-up imaging studies to assess the integrity of the endograft and the vascular system. It is essential to monitor for any signs of infection or other adverse effects during the recovery period.

Short Descr EVASC RPR A-UNILAC NDGFT RPT
Medium Descr EVASC RPR DPLMNT AORTO-UN-ILIAC NDGFT RPT
Long Descr Endovascular repair of infrarenal aorta and/or iliac artery(ies) by deployment of an aorto-uni-iliac endograft including pre-procedure sizing and device selection, all nonselective catheterization(s), all associated radiological supervision and interpretation, all endograft extension(s) placed in the aorta from the level of the renal arteries to the iliac bifurcation, and all angioplasty/stenting performed from the level of the renal arteries to the iliac bifurcation; for rupture including temporary aortic and/or iliac balloon occlusion, when performed (eg, for aneurysm, pseudoaneurysm, dissection, penetrating ulcer, traumatic disruption)
Status Code Active Code
Global Days 090 - Major Surgery
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) 2 - Co-surgeons permitted and no documentation required if the two- specialty requirement is met.
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) none
MUE 1

This is a primary code that can be used with these additional add-on codes.

34709 Addon Code MPFS Status: Active Code APC C Placement of extension prosthesis(es) distal to the common iliac artery(ies) or proximal to the renal artery(ies) for endovascular repair of infrarenal abdominal aortic or iliac aneurysm, false aneurysm, dissection, penetrating ulcer, including pre-procedure sizing and device selection, all nonselective catheterization(s), all associated radiological supervision and interpretation, and treatment zone angioplasty/stenting, when performed, per vessel treated (List separately in addition to code for primary procedure)
34713 Addon Code MPFS Status: Active Code APC N ASC N1 Percutaneous access and closure of femoral artery for delivery of endograft through a large sheath (12 French or larger), including ultrasound guidance, when performed, unilateral (List separately in addition to code for primary procedure)
34714 Addon Code MPFS Status: Active Code APC N ASC N1 Open femoral artery exposure with creation of conduit for delivery of endovascular prosthesis or for establishment of cardiopulmonary bypass, by groin incision, unilateral (List separately in addition to code for primary procedure)
34715 Addon Code MPFS Status: Active Code APC N ASC N1 Open axillary/subclavian artery exposure for delivery of endovascular prosthesis by infraclavicular or supraclavicular incision, unilateral (List separately in addition to code for primary procedure)
34716 Addon Code MPFS Status: Active Code APC N ASC N1 Open axillary/subclavian artery exposure with creation of conduit for delivery of endovascular prosthesis or for establishment of cardiopulmonary bypass, by infraclavicular or supraclavicular incision, unilateral (List separately in addition to code for primary procedure)
34717 Add-on Code Resequenced Code MPFS Status: Active Code APC C Endovascular repair of iliac artery at the time of aorto-iliac artery endograft placement by deployment of an iliac branched endograft including pre-procedure sizing and device selection, all ipsilateral selective iliac artery catheterization(s), all associated radiological supervision and interpretation, and all endograft extension(s) proximally to the aortic bifurcation and distally in the internal iliac, external iliac, and common femoral artery(ies), and treatment zone angioplasty/stenting, when performed, for rupture or other than rupture (eg, for aneurysm, pseudoaneurysm, dissection, arteriovenous malformation, penetrating ulcer, traumatic disruption), unilateral (List separately in addition to code for primary procedure)
34808 Addon Code MPFS Status: Active Code APC C CPT Assistant Article Endovascular placement of iliac artery occlusion device (List separately in addition to code for primary procedure)
34812 Addon Code Resequenced Code MPFS Status: Active Code APC C CPT Assistant Article Open femoral artery exposure for delivery of endovascular prosthesis, by groin incision, unilateral (List separately in addition to code for primary procedure)
34820 Addon Code Resequenced Code MPFS Status: Active Code APC C CPT Assistant Article Open iliac artery exposure for delivery of endovascular prosthesis or iliac occlusion during endovascular therapy, by abdominal or retroperitoneal incision, unilateral (List separately in addition to code for primary procedure)
34833 Addon Code Resequenced Code MPFS Status: Active Code APC C CPT Assistant Article Open iliac artery exposure with creation of conduit for delivery of endovascular prosthesis or for establishment of cardiopulmonary bypass, by abdominal or retroperitoneal incision, unilateral (List separately in addition to code for primary procedure)
34834 Addon Code Resequenced Code MPFS Status: Active Code APC C CPT Assistant Article Open brachial artery exposure for delivery of endovascular prosthesis, unilateral (List separately in addition to code for primary procedure)
37222 Addon Code MPFS Status: Active Code APC N ASC N1 Revascularization, endovascular, open or percutaneous, iliac artery, each additional ipsilateral iliac vessel; with transluminal angioplasty (List separately in addition to code for primary procedure)
37223 Addon Code MPFS Status: Active Code APC N ASC N1 Revascularization, endovascular, open or percutaneous, iliac artery, each additional ipsilateral iliac vessel; with transluminal stent placement(s), includes angioplasty within the same vessel, when performed (List separately in addition to code for primary procedure)
37252 Addon Code MPFS Status: Active Code APC N ASC N1 Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; initial noncoronary vessel (List separately in addition to code for primary procedure)
37253 Addon Code MPFS Status: Active Code APC N ASC N1 Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; each additional noncoronary vessel (List separately in addition to code for primary procedure)
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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
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
GC This service has been performed in part by a resident under the direction of a teaching physician
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
RT Right side (used to identify procedures performed on the right side of the body)
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
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2018-01-01 Added Code Added.
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