Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Ascending aorta graft, with cardiopulmonary bypass with valve suspension, with coronary reconstruction and valve-sparing aortic root remodeling (eg, David Procedure, Yacoub Procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 33864 refers to a complex surgical procedure involving the ascending aorta, specifically designed to address thoracic aortic aneurysms that also affect the aortic root. This procedure is performed under cardiopulmonary bypass, which is a technique that temporarily takes over the function of the heart and lungs during surgery, allowing for a bloodless surgical field and the ability to stop the heart for precise surgical manipulation. The procedure includes several critical components: the use of an ascending aorta graft, suspension of the aortic valve, reconstruction of the coronary arteries, and remodeling of the aortic root while preserving the aortic valve. This intricate approach is commonly known as the David Procedure or Yacoub Procedure, named after the surgeons who developed these techniques. The surgery typically begins with a standard median sternotomy, which involves making an incision down the middle of the chest to access the heart and aorta. The procedure is highly specialized and requires careful evaluation and manipulation of the aortic root and valve, ensuring that the aortic annulus is appropriately sized and that the aortic valve is reimplanted correctly to maintain its function. Overall, this procedure aims to repair the aneurysm while preserving the integrity and function of the aortic valve and coronary arteries, thus enhancing patient outcomes and reducing the risk of complications associated with aortic surgery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 33864 is indicated for patients with specific cardiovascular conditions, particularly those involving the ascending aorta and aortic root. The following indications are explicitly associated with this surgical intervention:

  • Thoracic Aortic Aneurysm - A dilation or bulging of the ascending aorta that poses a risk of rupture or dissection.
  • Aortic Root Involvement - Conditions where the aneurysm extends to or affects the aortic root, necessitating surgical intervention to prevent complications.
  • Need for Valve-Sparing Techniques - Situations where it is clinically desirable to preserve the aortic valve function while addressing the aneurysm.

2. Procedure

The surgical procedure associated with CPT® Code 33864 involves several critical steps, each essential for the successful repair of the ascending aorta and aortic root. The following procedural steps outline the process in detail:

  • Step 1: Initiation of Cardiopulmonary Bypass - The procedure begins with the establishment of cardiopulmonary bypass, which allows the surgeon to operate on a still and bloodless heart. This is achieved by connecting the patient to a heart-lung machine that takes over the function of pumping blood and oxygenating it.
  • Step 2: Transection of the Ascending Aorta - Once cardioplegic arrest is achieved, the ascending aorta is transected above the cross-clamp. This step is crucial for accessing the aortic root and allows for the dissection of both the right and left aortic buttons.
  • Step 3: Evaluation and Sizing of the Aortic Root - The aortic root and valve are carefully evaluated for any abnormalities. The aortic annulus is then sized to ensure that the graft will fit appropriately.
  • Step 4: Separation of Ventricular Fibers - The right ventricular fibers are separated from the left ventricular outflow tract (LVOT) at the level of the right commissure, facilitating the placement of stitches without damaging surrounding structures.
  • Step 5: Placement of Sub-Annular Stitches - Sub-annular stitches are placed with pledgets on the ventricular side, ensuring that the conduction system is not injured. These stitches exit outside the aorta at the junction of the aorta and LVOT.
  • Step 6: Graft Sizing and Modeling - The ascending aorta graft is sized and modeled to correspond to the right cusp, ensuring that it will sit upright in the chest once implanted.
  • Step 7: Securing the Graft - Sub-annular stitches are passed through the graft and tied to secure it to the aortic annulus, providing stability and ensuring proper alignment.
  • Step 8: Resuspension of Commissures - The three commissures of the aortic valve are resuspended, with careful attention to the height and distance between each resuspension to avoid distortion of the valve leaflets.
  • Step 9: Reimplantation of the Aortic Valve - The aortic valve is reimplanted and tested to confirm its proper function, ensuring that it will operate effectively post-surgery.
  • Step 10: Reimplantation of Coronary Buttons - The coronary buttons are reimplanted to restore blood flow to the coronary arteries.
  • Step 11: Completion of the Graft Connection - The distal portion of the graft is sewn to the remaining normal ascending aorta, completing the connection.
  • Step 12: Reperfusion and Closure - Air is evacuated from the heart, the clamp is removed, and the heart is reperfused. Temporary pacing wires are placed, and pacing is initiated if necessary. Finally, cardiopulmonary bypass is terminated, all cannulas are removed, and the chest is closed.

3. Post-Procedure

Post-procedure care following the surgery described by CPT® Code 33864 involves careful monitoring and management of the patient to ensure a successful recovery. Patients are typically observed in a critical care setting immediately after surgery to monitor vital signs, cardiac function, and any potential complications. Pain management is provided as needed, and patients may require temporary pacing to support heart function. The surgical site is monitored for signs of infection or other complications. Rehabilitation and gradual return to normal activities are encouraged, with follow-up appointments scheduled to assess the success of the procedure and the function of the aortic valve and graft. Long-term follow-up may include imaging studies to evaluate the aorta and ensure that there are no further complications.

Short Descr ASCENDING AORTIC GRAFT
Medium Descr ASCENDING AORTA GRF VALVE SPARE ROOT REMODEL
Long Descr Ascending aorta graft, with cardiopulmonary bypass with valve suspension, with coronary reconstruction and valve-sparing aortic root remodeling (eg, David Procedure, Yacoub Procedure)
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) P2B - Major procedure, cardiovascular-Aneurysm repair
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)
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)
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).
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.
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).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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
2017-01-01 Changed Guidelines changed.
2011-01-01 Changed Long description revised. Medium description changed. Guideline information changed.
2008-01-01 Added First appearance in code book in 2008.
Code
Description
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"