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Official Description

Ascending aorta graft, with cardiopulmonary bypass, with aortic root replacement using valved conduit and coronary reconstruction (eg, Bentall)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33863 involves a complex surgical intervention aimed at repairing conditions affecting the ascending aorta, specifically thoracic aortic aneurysms or dissections. This procedure is performed using a graft and requires the use of cardiopulmonary bypass, which temporarily takes over the function of the heart and lungs during surgery. The aortic root, which is the section of the aorta that connects to the heart and includes critical structures such as the aortic annulus, aortic valve leaflets, and coronary artery openings, is replaced using a valved conduit. The surgical approach typically involves a median sternotomy, allowing the surgeon to gain access to the heart and ascending aorta. The procedure is intricate, as it not only involves the replacement of the aortic root but also necessitates the reconstruction of the coronary arteries, ensuring that blood flow to the heart is maintained. The use of cardioplegic arrest is essential in this procedure, as it allows for a bloodless field and protects the heart during the surgical manipulation. Overall, this procedure is critical for patients with significant aortic pathology, aiming to restore normal function and prevent life-threatening complications.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 33863 is indicated for specific cardiovascular conditions that necessitate surgical intervention on the ascending aorta. The following are the primary indications for this procedure:

  • Thoracic Aortic Aneurysm A localized enlargement of the ascending aorta that poses a risk of rupture or dissection.
  • Aortic Dissection A serious condition where there is a tear in the inner layer of the aorta, leading to separation of the layers of the aortic wall.

2. Procedure

The procedure involves several critical steps to ensure successful repair of the ascending aorta and aortic root. The following outlines the procedural steps:

  • Step 1: Median Sternotomy The surgeon begins by performing a median sternotomy, which involves making an incision along the sternum to gain access to the thoracic cavity, specifically the heart and ascending aorta.
  • Step 2: Initiation of Cardiopulmonary Bypass Once access is achieved, cardiopulmonary bypass is initiated. This involves connecting the patient to a heart-lung machine that takes over the functions of the heart and lungs, allowing for a bloodless surgical field.
  • Step 3: Cross-Clamping the Ascending Aorta The ascending aorta is then cross-clamped to prevent blood flow during the repair process. This step is crucial for maintaining a controlled environment for the surgical intervention.
  • Step 4: Cardioplegic Arrest Following cross-clamping, cardioplegic arrest is induced, which involves administering a solution to stop the heart's activity, providing a still and bloodless field for surgery.
  • Step 5: Transection of the Ascending Aorta The ascending aorta is transected above the cross-clamp, allowing for the removal of the damaged section of the aorta.
  • Step 6: Inspection of the Aortic Valve and Coronary Ostia After transection, the surgeon inspects the aortic valve and the coronary ostia to assess their condition and determine the necessary repairs.
  • Step 7: Detachment of Coronary Ostia Dissection is performed to detach the coronary ostia from the aorta, along with a rim of aortic tissue, ensuring that the coronary arteries can be reconstructed properly.
  • Step 8: Excision of Aortic Valve Leaflets The aortic valve leaflets are excised to facilitate the placement of the new composite prosthesis.
  • Step 9: Sizing the Aortic Annulus The aortic annulus is sized to select an appropriate composite, valved prosthesis that will fit securely.
  • Step 10: Insertion of Composite Prosthesis The proximal (valved) end of the composite prosthesis is inserted into the annulus and secured with sutures, ensuring a tight fit to prevent leaks.
  • Step 11: Implantation of Coronary Ostia The coronary ostia, along with the rim of aortic tissue, are implanted into the prosthesis, restoring the connection to the coronary arteries.
  • Step 12: Anastomosis to Distal Aorta The distal end of the prosthesis is then anastomosed to the distal aorta, completing the graft repair.
  • Step 13: Reperfusion of the Heart After ensuring that all air is evacuated from the heart, the cross-clamp is removed, and the heart is reperfused, allowing it to resume normal function.
  • Step 14: Placement of Temporary Pacing Wires If necessary, temporary pacing wires are placed, and pacing is initiated to support heart rhythm post-surgery.
  • Step 15: Termination of Cardiopulmonary Bypass Cardiopulmonary bypass is then terminated, and all cannulas are removed.
  • Step 16: Closure of the Chest Drains are placed as needed, and the chest is closed, completing the surgical procedure.

3. Post-Procedure

Post-procedure care following the ascending aorta graft with aortic root replacement is critical for patient recovery. Patients are typically monitored in a critical care setting to assess heart function and ensure that there are no complications. Expected recovery includes managing pain, monitoring for signs of infection, and ensuring proper drainage from surgical sites. Patients may require temporary pacing support until their heart rhythm stabilizes. Follow-up imaging may be necessary to evaluate the integrity of the graft and the function of the aortic valve. Rehabilitation and gradual return to normal activities are encouraged as the patient heals.

Short Descr ASCENDING AORTIC GRAFT
Medium Descr AS-AORT GRF W/CARD BYP & AORTIC ROOT RPLCMT
Long Descr Ascending aorta graft, with cardiopulmonary bypass, with aortic root replacement using valved conduit and coronary reconstruction (eg, Bentall)
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) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 52 - Aortic resection, replacement or anastomosis

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)
33530 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Reoperation, coronary artery bypass procedure or valve procedure, more than 1 month after original operation (List separately in addition to code for primary procedure)
33866 Add-on Code MPFS Status: Active Code APC N ASC N1 Aortic hemiarch graft including isolation and control of the arch vessels, beveled open distal aortic anastomosis extending under one or more of the arch vessels, and total circulatory arrest or isolated cerebral perfusion (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)
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
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).
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).
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.
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.)
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
CR Catastrophe/disaster related
ET Emergency services
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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
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
2011-01-01 Changed Long description revised. Medium description changed. Guideline information changed.
1994-01-01 Added First appearance in code book in 1994.
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