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Official Description

Revision, lower extremity arterial bypass, without thrombectomy, open; with segmental vein interposition

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

An open revision of a lower extremity arterial bypass, as described by CPT® Code 35881, involves a surgical procedure aimed at correcting issues with a previously placed arterial bypass graft in the lower extremities. This procedure is specifically performed without thrombectomy and includes the use of segmental vein interposition. The need for such a revision typically arises when the graft, inflow artery, or outflow artery develops a stenosis, which is a narrowing that can lead to reduced blood flow and potential graft failure. The revision is crucial to prevent re-occlusion of the graft, thereby ensuring adequate blood supply to the affected limb. During the procedure, the surgeon makes an incision over the stenosed area of the graft, exposing it for further intervention. The use of segmental vein interposition involves excising the narrowed segment of the graft and replacing it with a harvested segment of vein, often from the saphenous vein. This technique aims to restore proper blood flow and maintain the functionality of the arterial bypass graft.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 35881 is indicated for patients who exhibit signs of stenosis in a previously placed lower extremity arterial bypass graft. The following conditions may warrant this surgical intervention:

  • Stenosis of the bypass graft - A narrowing of the graft that impedes blood flow.
  • Graft failure - Situations where the bypass graft is not functioning effectively, leading to inadequate blood supply to the lower extremity.
  • Re-occlusion risk - Patients at risk of the graft becoming blocked again, necessitating a revision to restore proper circulation.

2. Procedure

The procedure for segmental vein interposition as outlined in CPT® Code 35881 involves several critical steps to ensure successful revision of the arterial bypass graft:

  • Step 1: Incision and Exposure - The surgeon begins by making an incision in the skin and soft tissue over the area of the stenosed segment of the previously placed lower extremity arterial bypass graft. This incision allows for direct access to the graft, which is then carefully dissected free from surrounding tissues to expose the affected area.
  • Step 2: Blood Flow Control - To manage blood flow during the procedure, vessel loops are placed both proximal and distal to the stenosed area of the graft. This step is crucial to prevent excessive bleeding and to maintain a clear surgical field while the stenosed segment is addressed.
  • Step 3: Harvesting the Vein Segment - A segment of vein, typically the saphenous vein, is harvested from the patient. This harvested vein will serve as the replacement for the excised stenosed segment of the graft.
  • Step 4: Excision of the Stenosed Segment - The surgeon excises the narrowed segment of the previously placed bypass graft. This step is essential to remove the obstruction that is causing the reduced blood flow.
  • Step 5: Insertion of the New Vein Segment - The harvested vein segment is then trimmed to the appropriate length and sutured to the remaining proximal and distal segments of the bypass graft. This new vein segment effectively replaces the excised stenosed portion, restoring the continuity of the arterial flow.
  • Step 6: Final Checks - After the new vein segment is in place, the vessel loops are released, and hemostasis is checked to ensure there is no excessive bleeding. A completion angiography is performed to confirm that the revised segment of the arterial graft is patent and that blood flow is restored adequately.

3. Post-Procedure

Following the completion of the segmental vein interposition procedure, patients typically require monitoring for any signs of complications, such as bleeding or infection at the surgical site. Recovery may involve a period of rest and gradual mobilization, depending on the patient's overall health and the extent of the surgery. Follow-up appointments are essential to assess the success of the revision and to ensure that the graft remains patent. Additional imaging studies may be performed to evaluate blood flow and the integrity of the newly placed vein segment.

Short Descr REVISE GRAFT W/VEIN
Medium Descr REVJ LXTR ARTL BYP OPN W/SGMTL VEIN INTERPOS
Long Descr Revision, lower extremity arterial bypass, without thrombectomy, open; with segmental vein interposition
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) 1 - 150% payment adjustment for bilateral procedures applies.
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 Hospital Part B services paid through a comprehensive APC
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 61 - Other OR procedures on vessels other than head and neck

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

35572 Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Illustration for Code Harvest of femoropopliteal vein, 1 segment, for vascular reconstruction procedure (eg, aortic, vena caval, coronary, peripheral artery) (List separately in addition to code for primary procedure)
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).
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
CR Catastrophe/disaster related
GC This service has been performed in part by a resident under the direction of a teaching physician
GW Service not related to the hospice patient's terminal condition
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)
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
2000-01-01 Added First appearance in code book in 2000.
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