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Official Description

Transverse aortic arch graft, with cardiopulmonary bypass, with profound hypothermia, total circulatory arrest and isolated cerebral perfusion with reimplantation of arch vessel(s) (eg, island pedicle or individual arch vessel reimplantation)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33871 involves the surgical repair of a transverse aortic arch aneurysm using a graft. This complex operation is performed under cardiopulmonary bypass, which temporarily takes over the function of the heart and lungs, allowing the surgeon to operate on a still and bloodless field. The procedure requires profound hypothermia, which is achieved through the administration of cold blood cardioplegia, and total circulatory arrest, during which blood flow is completely halted to facilitate the surgical intervention. Isolated cerebral perfusion is also a critical component of this procedure, ensuring that the brain receives adequate blood supply even while the rest of the body is under circulatory arrest. The operation includes the reimplantation of arch vessels, which may involve either an island pedicle or individual arch vessel reimplantation techniques. This detailed approach is necessary to restore normal blood flow and function to the aorta and its branches, which are vital for supplying oxygenated blood to the upper body and brain.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 33871 is indicated for the repair of a transverse aortic arch aneurysm. This condition may present with various symptoms or complications, including:

  • Transverse Aortic Arch Aneurysm: A localized dilation of the aorta in the arch region, which can lead to life-threatening complications if not addressed.
  • Symptoms of Aortic Insufficiency: Patients may experience symptoms such as shortness of breath, chest pain, or fatigue due to compromised blood flow.
  • Risk of Aortic Rupture: The presence of an aneurysm poses a significant risk of rupture, which can result in severe hemorrhage and is a surgical emergency.

2. Procedure

The surgical procedure for CPT® Code 33871 involves several critical steps to ensure the successful repair of the transverse aortic arch aneurysm:

  • Step 1: The procedure begins with the cannulation of the right subclavian and right femoral arteries to establish access for cardiopulmonary bypass. This is essential for diverting blood flow away from the heart and lungs during the surgery.
  • Step 2: A median sternotomy is performed to access the heart. The surgeon exposes the brachiocephalic, left common carotid, and left subclavian arteries, which are crucial for the subsequent steps of the procedure.
  • Step 3: Cardiopulmonary bypass is initiated, and retrograde cold blood cardioplegia is administered to induce hypothermia and achieve circulatory arrest. This step is vital for protecting the heart and brain during the operation.
  • Step 4: The femoral cannula is clamped, and cerebral perfusion is initiated through the subclavian cannula. Alternatively, this may occur after the anastomosis of the left carotid artery, ensuring that the brain receives adequate blood flow.
  • Step 5: The aortic arch and its branches are mobilized, and the aorta is transected to remove the diseased section. The surgeon may employ either an en bloc or separated graft technique for the repair.
  • Step 6: If the en bloc technique is chosen, a tube graft is placed, and the brachiocephalic, left common carotid, and left subclavian arteries are reconstructed and attached to the tube graft. In contrast, the separated graft technique utilizes a prefabricated four-branched aortic arch prosthesis.
  • Step 7: In the separated graft technique, three branches of the prosthesis correspond to the brachiocephalic, left common carotid, and left subclavian arteries, while the fourth branch is designated for cerebral perfusion after completing the distal aortic and left common carotid anastomoses.
  • Step 8: The branched aortic arch prosthesis is inserted, and the distal end is anastomosed to the aorta. The left common carotid artery is then sutured to the prosthesis, followed by the administration of cerebral perfusion through the fourth branch and the right subclavian artery.
  • Step 9: The left subclavian and brachiocephalic arteries are sutured to the prosthesis, and the proximal end of the prosthesis is anastomosed to the aorta, completing the reconstruction.
  • Step 10: Once the surgical repair is complete, cardiopulmonary bypass is terminated. The fourth branch of the prosthesis is resected, and chest tubes are placed as needed to facilitate drainage. Finally, the chest is closed.

3. Post-Procedure

After the completion of the procedure, patients typically require close monitoring in a postoperative setting. Expected recovery may involve management of pain, monitoring for any signs of complications such as bleeding or infection, and ensuring proper function of the newly reconstructed aorta and its branches. The placement of chest tubes is common to assist in draining any excess fluid or blood from the surgical site. Patients may also undergo imaging studies to assess the success of the repair and the integrity of the graft. Rehabilitation and gradual return to normal activities will be guided by the healthcare team based on the patient's overall condition and recovery progress.

Short Descr TRANSVRS A-ARCH GRF HYPTHRM
Medium Descr TRANSVRS A-ARCH GRF W/CARD BYP PRFD HYPOTHERMIA
Long Descr Transverse aortic arch graft, with cardiopulmonary bypass, with profound hypothermia, total circulatory arrest and isolated cerebral perfusion with reimplantation of arch vessel(s) (eg, island pedicle or individual arch vessel reimplantation)
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) 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) none
MUE 1

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

33257 Addon Code MPFS Status: Active Code APC C Illustration for Code Operative tissue ablation and reconstruction of atria, performed at the time of other cardiac procedure(s), limited (eg, modified maze procedure) (List separately in addition to code for primary procedure)
33259 Addon Code MPFS Status: Active Code APC C Illustration for Code Operative tissue ablation and reconstruction of atria, performed at the time of other cardiac procedure(s), extensive (eg, maze procedure), with cardiopulmonary bypass (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)
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)
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)
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.
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).
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
GC This service has been performed in part by a resident under the direction of a teaching physician
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).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient 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.
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).
AG Primary physician
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
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
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2020-01-01 Added Code added.
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