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Official Description

Endoscopy, surgical, including video-assisted harvest of vein(s) for coronary artery bypass procedure (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 33508 refers to a surgical endoscopic procedure specifically designed for the harvesting of veins, particularly the greater saphenous vein, which is utilized in coronary artery bypass grafting (CABG). This procedure is performed using a video-assisted endoscopic technique, which allows for minimally invasive access to the vein. The primary goal of this procedure is to obtain a vein graft that can be used to bypass blocked coronary arteries, thereby improving blood flow to the heart muscle. The endoscopic approach minimizes the size of the incisions required, leading to reduced postoperative pain and quicker recovery times compared to traditional open harvesting methods. The procedure involves making small incisions and utilizing specialized instruments, including a camera and trocar, to visualize and dissect the vein without the need for larger surgical openings. This technique is particularly advantageous as it enhances the precision of the dissection and reduces the risk of complications associated with larger incisions.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 33508 is indicated for patients requiring a coronary artery bypass procedure where a vein graft is necessary. The specific indications for performing this endoscopic vein harvesting include:

  • Coronary Artery Disease Patients with significant coronary artery disease who have blockages that necessitate bypass grafting to restore adequate blood flow to the heart.
  • Need for Vein Grafting Situations where a vein graft is required to bypass occluded coronary arteries, particularly when the internal mammary artery is not suitable or available.
  • Minimally Invasive Approach Preference for a minimally invasive surgical technique that reduces recovery time and postoperative complications associated with larger incisions.

2. Procedure

The procedure for harvesting the vein using CPT® Code 33508 involves several detailed steps, which are as follows:

  • Step 1: Incision and Introduction of Endoscopic System A small incision is made over the targeted vein, typically the greater saphenous vein. An additional incision is made at the knee to facilitate access. The endoscopic dissection system, which includes a camera and a trocar, is introduced through these incisions.
  • Step 2: Initial Dissection The dissection system is advanced along the anterior surface of the vein toward the groin. The vein is carefully dissected for several centimeters to free it from surrounding tissues, ensuring that it remains intact for grafting.
  • Step 3: Balloon Trocar Insertion A balloon trocar is inserted into the dissection area. The balloon is inflated to separate the tissues further by insufflating air, which aids in the dissection process and minimizes trauma to the surrounding structures.
  • Step 4: Continued Dissection Dissection continues toward the groin, allowing for the complete mobilization of the vein. Once the proximal end is adequately dissected, the trocar and camera are removed.
  • Step 5: Distal Dissection The dissection system is reinserted at the knee and advanced toward the ankle. The same technique of insufflation and careful dissection is employed to free the distal portion of the vein.
  • Step 6: Inspection and Ligation After the vein is fully mobilized, the camera and trocar are removed, and the trocar tip is replaced with bipolar scissors. The system is reinserted to inspect the saphenous vein thoroughly, and any side branches are ligated to ensure the vein is suitable for grafting.
  • Step 7: Vein Removal The endoscopic system is removed, and small incisions are made at the groin and ankle. The saphenous vein is then ligated and divided proximally and distally. Finally, the vein is carefully removed from the leg and prepared for use in the coronary artery bypass procedure.

3. Post-Procedure

Post-procedure care following the endoscopic vein harvesting involves monitoring the patient for any signs of complications, such as bleeding or infection at the incision sites. Patients are typically advised on wound care and may be prescribed pain management strategies to alleviate discomfort. Recovery time is generally shorter compared to traditional vein harvesting methods, allowing for a quicker return to normal activities. Follow-up appointments are essential to assess the healing process and ensure that the harvested vein is functioning properly for the upcoming coronary artery bypass procedure.

Short Descr ENDOSCOPIC VEIN HARVEST
Medium Descr NDSC SURG W/VIDEO-ASSISTED HARVEST VEIN CABG
Long Descr Endoscopy, surgical, including video-assisted harvest of vein(s) for coronary artery bypass procedure (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) 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 Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8I - Endoscopy - other
MUE 1
CCS Clinical Classification 61 - Other OR procedures on vessels other than head and neck

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

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)
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.
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
GC This service has been performed in part by a resident under the direction of a teaching physician
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).
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
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
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
CR Catastrophe/disaster related
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.
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.
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.
93 Synchronous telemedicine service rendered via telephone or other real-time interactive audio-only telecommunications system : synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located away at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that is sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction.
A8 Dressing for eight wounds
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
ET Emergency services
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
KX Requirements specified in the medical policy have been met
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
UD Medicaid level of care 13, as defined by each state
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
Date
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Notes
2003-01-01 Added First appearance in code book in 2003.
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