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

Replacement, aortic valve, open, with cardiopulmonary bypass; with stentless tissue valve

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

An open aortic valve replacement is a surgical procedure performed to replace a diseased or malfunctioning aortic valve with a prosthetic valve. This procedure is conducted with the assistance of cardiopulmonary bypass, which temporarily takes over the function of the heart and lungs during surgery, allowing the surgeon to operate on a still and bloodless field. The prosthetic valve used in this specific procedure is a stentless tissue valve, which is derived from biological sources such as porcine (pig) or bovine (cow) tissues. Unlike mechanical valves, which are made from synthetic materials, stentless tissue valves are designed to mimic the natural function of the heart valve and may offer advantages in terms of hemodynamics and reduced risk of thrombosis. The surgical approach typically involves a median sternotomy or an upper hemisternotomy to access the heart. The procedure is complex and requires careful manipulation of the heart structures, including the aortic annulus and surrounding tissues, to ensure proper placement and function of the new valve. This replacement is indicated for patients with severe aortic stenosis or regurgitation, where the valve fails to open properly or does not close completely, leading to compromised cardiac function.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The open aortic valve replacement procedure is indicated for patients experiencing severe aortic stenosis or aortic regurgitation. These conditions may present with symptoms such as:

  • Severe Aortic Stenosis - A condition where the aortic valve narrows, restricting blood flow from the heart to the body, often leading to symptoms like chest pain, fatigue, and shortness of breath.
  • Aortic Regurgitation - A condition where the aortic valve does not close properly, allowing blood to flow backward into the heart, which can cause symptoms such as palpitations, fatigue, and heart failure.

2. Procedure

The procedure for open aortic valve replacement with a stentless tissue valve involves several critical steps:

  • Step 1: Accessing the Heart - The surgeon begins by exposing the heart through a median sternotomy or upper hemisternotomy, providing access to the aortic valve.
  • Step 2: Establishing Cardiopulmonary Bypass - A venous cannula is inserted into the right atrial appendage, and an arterial cannula is placed in the ascending aorta. Cardiopulmonary bypass is then established, and cardioplegic arrest is initiated to protect the heart during surgery.
  • Step 3: Incision and Valve Removal - A transverse incision is made in the aorta, and the ascending aorta is transected. The stenosed aortic valve is excised, and the aortic annulus and wall are debrided to prepare for the new valve.
  • Step 4: Placing the Stentless Tissue Valve - The stentless tissue valve is aligned, and proximal sutures are placed in the subannular position. The commissural posts of the valve are attached with single sutures, and a distal row of sutures is placed extending from each cusp to the tip of each commissural post, ensuring that the coronary ostia are not obstructed.
  • Step 5: Closing the Aorta - The aortic wall is sutured to the prosthetic valve, and the incision in the aorta is closed. The aortic cross-clamp is then removed, and the patient is weaned off cardiopulmonary bypass.
  • Step 6: Postoperative Care - Chest tubes are placed as needed to drain any excess fluid, and the chest incision is closed to complete the procedure.

3. Post-Procedure

After the procedure, patients are monitored closely in a recovery area. Postoperative care may include managing pain, monitoring for any signs of complications, and ensuring proper heart function. Patients may require additional imaging or tests to assess the function of the new valve. Recovery time can vary, but patients are typically advised on activity restrictions and follow-up appointments to ensure optimal healing and valve performance.

Short Descr REPLACEMENT AORTIC VALVE OPN
Medium Descr RPLCMT AORTIC VALVE OPN W/STENTLESS TISSUE VALVE
Long Descr Replacement, aortic valve, open, with cardiopulmonary bypass; with stentless tissue valve
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 43 - Heart valve procedures

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

33141 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting PUB 100 CPT Assistant Article Transmyocardial laser revascularization, by thoracotomy; performed at the time of other open cardiac procedure(s) (List separately in addition to code for primary procedure)
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)
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
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).
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.
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.)
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).
CR Catastrophe/disaster related
GC This service has been performed in part by a resident under the direction of a teaching physician
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2017-01-01 Changed Long, Medium and Short descriptions changed.
2000-01-01 Added First appearance in code book in 2000.
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"