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Official Description

Repair of anomalous coronary artery from pulmonary artery origin; with construction of intrapulmonary artery tunnel (Takeuchi procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 33505 involves the surgical repair of an anomalous coronary artery that originates from the pulmonary artery. This condition can lead to significant cardiac complications, as the anomalous artery may not supply adequate blood flow to the heart muscle. The surgical intervention, known as the Takeuchi procedure, aims to correct this anomaly by constructing an intrapulmonary artery tunnel. During the operation, the physician gains access to the heart through a median sternotomy, which involves making an incision along the sternum to open the chest cavity. The procedure can be performed using cardiopulmonary bypass, which temporarily takes over the function of the heart and lungs, or it can be done on a beating heart using an off-pump technique, allowing for a more direct approach without the need for bypass. The pericardium, the protective sac surrounding the heart, is incised, and a section is harvested to create the tunnel necessary for the repair. An aortopulmonary window is then created in the walls of both the aorta and the pulmonary artery, facilitating the construction of the tunnel. This tunnel is fashioned from the harvested pericardial tissue and is attached to the origin of the anomalous coronary artery within the pulmonary artery. It is then passed through the pulmonary artery to the aortopulmonary window and secured to the aorta, effectively rerouting blood flow. After the completion of the procedure, if cardiopulmonary bypass was utilized, it is discontinued, and chest tubes may be placed as needed before closing the chest. This complex surgical intervention is critical for restoring normal coronary circulation and preventing potential cardiac complications associated with the anomalous artery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The Takeuchi procedure, represented by CPT® Code 33505, is indicated for patients with an anomalous coronary artery that originates from the pulmonary artery. This condition can lead to various symptoms and complications, necessitating surgical intervention to restore normal coronary blood flow. The following are specific indications for performing this procedure:

  • Anomalous Coronary Artery - The presence of a coronary artery that arises from the pulmonary artery, which can compromise myocardial perfusion.
  • Cardiac Ischemia - Symptoms of reduced blood flow to the heart muscle, potentially leading to angina or myocardial infarction.
  • Congenital Heart Defects - Associated congenital anomalies that may require surgical correction to improve cardiac function.

2. Procedure

The Takeuchi procedure involves several critical steps to repair the anomalous coronary artery. Each step is essential for ensuring the success of the surgery and the restoration of normal blood flow to the heart.

  • Step 1: Accessing the Heart - The surgeon begins by performing a median sternotomy, which involves making a vertical incision along the sternum to gain access to the thoracic cavity and the heart.
  • Step 2: Cardiopulmonary Bypass or Off-Pump Technique - Depending on the patient's condition and the surgeon's preference, the procedure may be conducted using cardiopulmonary bypass to temporarily take over the heart and lung functions, or it may be performed on a beating heart using an off-pump technique.
  • Step 3: Incising the Pericardium - The pericardium, the fibrous sac surrounding the heart, is incised to expose the heart and allow for the harvesting of a section of pericardial tissue needed for the tunnel construction.
  • Step 4: Creating the Aortopulmonary Window - An aortopulmonary window is created by making an opening in the walls of both the aorta and the pulmonary artery, which is crucial for the subsequent steps of the procedure.
  • Step 5: Constructing the Tunnel - A tunnel is fashioned from the harvested section of pericardium. This tunnel is then attached to the origin of the anomalous coronary artery within the pulmonary artery.
  • Step 6: Attaching the Tunnel to the Aorta - The constructed tunnel is passed through the pulmonary artery to the aortopulmonary window and securely attached to the aorta, effectively rerouting blood flow from the pulmonary artery to the aorta.
  • Step 7: Concluding the Procedure - If cardiopulmonary bypass was utilized, it is discontinued. The surgeon then places chest tubes as necessary to drain any fluid or air from the thoracic cavity before closing the chest.

3. Post-Procedure

After the completion of the Takeuchi procedure, patients typically require close monitoring in a postoperative setting. The expected recovery involves managing pain, monitoring for any complications, and ensuring proper healing of the surgical site. Chest tubes, if placed, are monitored and removed as appropriate. Patients may need to stay in the hospital for several days for observation and to ensure that cardiac function is stable. Follow-up care will include regular assessments to evaluate the success of the procedure and the patient's overall cardiac health.

Short Descr REPAIR ARTERY W/TUNNEL
Medium Descr RPR ANOM CORON ART W/CONSTJ INTRAPULM ART TUNNEL
Long Descr Repair of anomalous coronary artery from pulmonary artery origin; with construction of intrapulmonary artery tunnel (Takeuchi 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) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 49 - Other OR heart procedures

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.
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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
2006-01-01 Changed Code description changed.
1994-01-01 Added First appearance in code book in 1994.
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