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Official Description

Reoperation, coronary artery bypass procedure or valve procedure, more than 1 month after original operation (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 33530 refers to a reoperation involving a coronary artery bypass procedure or a valve procedure that occurs more than one month after the initial surgery. This procedure necessitates careful access to the heart, which is achieved by reopening the sternum, a process that requires precision due to the presence of scar tissue that may have developed from the previous surgical intervention. During the reoperation, cardiopulmonary bypass is initiated to ensure that the heart continues to function properly while the surgical procedure is being performed. Once the necessary repairs or bypasses are completed, the cardiopulmonary bypass is discontinued, and the chest is subsequently closed. It is important to report this code specifically when the reoperation is conducted more than one month following the original procedure, as it is categorized as an additional procedure that is listed separately from the primary surgical code for billing purposes.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The reoperation coded as CPT® 33530 is indicated for patients who require a repeat coronary artery bypass or valve procedure due to complications or issues arising from the initial surgery. This may include cases where there is a need to address new blockages in the coronary arteries, valve dysfunction, or other cardiac conditions that necessitate surgical intervention after the initial operation has taken place. The timing of the reoperation, specifically occurring more than one month after the original procedure, is a critical factor in determining the appropriateness of this code.

  • Coronary Artery Blockage New or recurrent blockages in the coronary arteries that require surgical intervention.
  • Valve Dysfunction Issues with heart valves that necessitate repair or replacement after previous surgery.
  • Postoperative Complications Complications arising from the initial surgery that require further surgical correction.

2. Procedure

The reoperation procedure begins with the patient being placed under general anesthesia to ensure comfort and immobility during the surgery. The surgical team then prepares the patient by positioning them appropriately and ensuring all necessary equipment is ready. The first step involves reopening the sternum, which is done with precision to minimize damage to surrounding tissues and to navigate through any scar tissue that may have formed since the original operation.

  • Accessing the Heart The sternum is carefully reopened to access the heart, taking special care to manage any scar tissue from the previous surgery.
  • Initiating Cardiopulmonary Bypass Cardiopulmonary bypass is initiated to maintain circulation and oxygenation of the blood while the heart is being operated on, allowing the surgical team to work on a still and bloodless field.
  • Performing the Reoperation The surgical team performs the necessary bypass or valve procedure, addressing the specific cardiac issues that have arisen since the initial surgery.
  • Discontinuing Cardiopulmonary Bypass Once the surgical repairs are completed, cardiopulmonary bypass is carefully discontinued, and the heart is allowed to resume its normal function.
  • Closing the Chest The chest is then closed, ensuring that all layers are properly sutured to promote healing and recovery.

3. Post-Procedure

After the reoperation, patients are typically monitored in a recovery area to ensure stable vital signs and to manage any immediate postoperative complications. The expected recovery period may vary depending on the individual patient's health status and the complexity of the procedure performed. Patients may require additional support, including pain management and rehabilitation, to aid in their recovery. Follow-up appointments are essential to monitor the healing process and to assess the success of the reoperation. It is crucial for healthcare providers to provide detailed postoperative care instructions to ensure optimal recovery outcomes.

Short Descr CORONARY ARTERY BYPASS/REOP
Medium Descr ROPRTJ CAB/VALVE PX > 1 MO AFTER ORIGINAL OPERJ
Long Descr Reoperation, coronary artery bypass procedure or valve procedure, more than 1 month after original operation (List separately in addition to code for primary procedure)
Status Code Active Code
Global Days ZZZ - Code Related to Another Service
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 0 - No 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) 0 - Co-surgeons not permitted for this procedure.
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) P2A - Major procedure, cardiovascular-CABG
MUE 1
CCS Clinical Classification 44 - Coronary artery bypass graft (CABG)

This is an add-on code that must be used in conjunction with one of these primary codes.

33390 MPFS Status: Active Code APC C Valvuloplasty, aortic valve, open, with cardiopulmonary bypass; simple (ie, valvotomy, debridement, debulking, and/or simple commissural resuspension)
33391 MPFS Status: Active Code APC C Valvuloplasty, aortic valve, open, with cardiopulmonary bypass; complex (eg, leaflet extension, leaflet resection, leaflet reconstruction, or annuloplasty)
33404 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Construction of apical-aortic conduit
33405 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Replacement, aortic valve, open, with cardiopulmonary bypass; with prosthetic valve other than homograft or stentless valve
33406 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Replacement, aortic valve, open, with cardiopulmonary bypass; with allograft valve (freehand)
33410 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Replacement, aortic valve, open, with cardiopulmonary bypass; with stentless tissue valve
33411 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Replacement, aortic valve; with aortic annulus enlargement, noncoronary sinus
33412 MPFS Status: Active Code APC C Illustration for Code Replacement, aortic valve; with transventricular aortic annulus enlargement (Konno procedure)
33413 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Replacement, aortic valve; by translocation of autologous pulmonary valve with allograft replacement of pulmonary valve (Ross procedure)
33414 MPFS Status: Active Code APC C Illustration for Code Repair of left ventricular outflow tract obstruction by patch enlargement of the outflow tract
33415 MPFS Status: Active Code APC C Resection or incision of subvalvular tissue for discrete subvalvular aortic stenosis
33416 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Ventriculomyotomy (-myectomy) for idiopathic hypertrophic subaortic stenosis (eg, asymmetric septal hypertrophy)
33417 MPFS Status: Active Code APC C Illustration for Code Aortoplasty (gusset) for supravalvular stenosis
33418 MPFS Status: Active Code APC C Transcatheter mitral valve repair, percutaneous approach, including transseptal puncture when performed; initial prosthesis
33419 Addon Code MPFS Status: Active Code APC N ASC N1 Transcatheter mitral valve repair, percutaneous approach, including transseptal puncture when performed; additional prosthesis(es) during same session (List separately in addition to code for primary procedure)
33420 MPFS Status: Active Code APC C Illustration for Code Valvotomy, mitral valve; closed heart
33422 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Valvotomy, mitral valve; open heart, with cardiopulmonary bypass
33425 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Valvuloplasty, mitral valve, with cardiopulmonary bypass;
33426 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Valvuloplasty, mitral valve, with cardiopulmonary bypass; with prosthetic ring
33427 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Valvuloplasty, mitral valve, with cardiopulmonary bypass; radical reconstruction, with or without ring
33430 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Replacement, mitral valve, with cardiopulmonary bypass
33440 Resequenced Code MPFS Status: Active Code APC C Replacement, aortic valve; by translocation of autologous pulmonary valve and transventricular aortic annulus enlargement of the left ventricular outflow tract with valved conduit replacement of pulmonary valve (Ross-Konno procedure)
33460 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Valvectomy, tricuspid valve, with cardiopulmonary bypass
33463 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Valvuloplasty, tricuspid valve; without ring insertion
33464 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Valvuloplasty, tricuspid valve; with ring insertion
33465 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Replacement, tricuspid valve, with cardiopulmonary bypass
33468 MPFS Status: Active Code APC C Tricuspid valve repositioning and plication for Ebstein anomaly
33474 MPFS Status: Active Code APC C Valvotomy, pulmonary valve, open heart, with cardiopulmonary bypass
33475 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Replacement, pulmonary valve
33476 MPFS Status: Active Code APC C Illustration for Code Right ventricular resection for infundibular stenosis, with or without commissurotomy
33477 MPFS Status: Active Code APC C Transcatheter pulmonary valve implantation, percutaneous approach, including pre-stenting of the valve delivery site, when performed
33478 MPFS Status: Active Code APC C CPT Assistant Article Illustration for Code Outflow tract augmentation (gusset), with or without commissurotomy or infundibular resection
33496 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Repair of non-structural prosthetic valve dysfunction with cardiopulmonary bypass (separate procedure)
33510 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, vein only; single coronary venous graft
33511 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, vein only; 2 coronary venous grafts
33512 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, vein only; 3 coronary venous grafts
33513 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, vein only; 4 coronary venous grafts
33514 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Coronary artery bypass, vein only; 5 coronary venous grafts
33516 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, vein only; 6 or more coronary venous grafts
33517 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, using venous graft(s) and arterial graft(s); single vein graft (List separately in addition to code for primary procedure)
33518 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Coronary artery bypass, using venous graft(s) and arterial graft(s); 2 venous grafts (List separately in addition to code for primary procedure)
33519 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Coronary artery bypass, using venous graft(s) and arterial graft(s); 3 venous grafts (List separately in addition to code for primary procedure)
33521 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Coronary artery bypass, using venous graft(s) and arterial graft(s); 4 venous grafts (List separately in addition to code for primary procedure)
33522 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Coronary artery bypass, using venous graft(s) and arterial graft(s); 5 venous grafts (List separately in addition to code for primary procedure)
33523 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Coronary artery bypass, using venous graft(s) and arterial graft(s); 6 or more venous grafts (List separately in addition to code for primary procedure)
33533 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Coronary artery bypass, using arterial graft(s); single arterial graft
33534 MPFS Status: Active Code APC C Physician Quality Reporting Coronary artery bypass, using arterial graft(s); 2 coronary arterial grafts
33535 MPFS Status: Active Code APC C Physician Quality Reporting Coronary artery bypass, using arterial graft(s); 3 coronary arterial grafts
33536 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Coronary artery bypass, using arterial graft(s); 4 or more coronary arterial grafts
33863 MPFS Status: Active Code APC C CPT Assistant Article Ascending aorta graft, with cardiopulmonary bypass, with aortic root replacement using valved conduit and coronary reconstruction (eg, Bentall)
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)
35500 Addon Code MPFS Status: Active Code APC N CPT Assistant Article Harvest of upper extremity vein, 1 segment, for lower extremity or coronary artery bypass procedure (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).
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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.
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.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CR Catastrophe/disaster related
ET Emergency services
GW Service not related to the hospice patient's terminal condition
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
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
TG Complex/high tech level of care
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
2019-01-01 Note AMA Guidelines changed.
2017-01-01 Changed Guidelines changed.
2011-01-01 Changed Short description changed.
2010-01-01 Changed Code description changed.
1991-01-01 Added First appearance in code book in 1991.
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