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Official Description

Thrombectomy of arterial or venous graft (other than hemodialysis graft or fistula);

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

An open thrombectomy of an arterial or venous graft, excluding hemodialysis grafts or fistulas, is a surgical procedure aimed at removing a thrombus, or blood clot, that has formed within the graft. This procedure is necessary when a graft, which is a conduit used to bypass blocked arteries or veins, develops stenosis—a narrowing that can lead to thrombosis and subsequent re-occlusion. The thrombectomy can be performed with or without the need for revision of the graft itself. During the procedure, a surgical incision is made over the graft site, allowing direct access to the graft. Vessel loops are strategically placed both upstream and downstream of the thrombus to manage blood flow during the operation. The surgeon then opens the graft to directly visualize and remove the thrombus, which may involve techniques such as applying arterial back pressure or manual massage to facilitate the expulsion of the clot. After the thrombus is successfully removed, an angiography may be conducted to confirm that the graft is clear of obstructions and remains patent. If stenosis is present, the graft may require revision, which could involve enlarging the narrowed area with a patch graft or replacing it with a tubular graft segment. The appropriate CPT® code for this procedure is 35875 when the thrombectomy is performed without graft revision, while 35876 is used when the procedure includes graft revision.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The open thrombectomy of an arterial or venous graft is indicated in the following situations:

  • Thrombosis Formation The procedure is performed when a thrombus has formed within the graft, leading to obstruction of blood flow.
  • Stenosis of the Graft Indications include the presence of stenosis, which is a narrowing of the graft that can contribute to thrombosis and re-occlusion.
  • Re-occlusion of the Graft The procedure is necessary when there is a recurrence of occlusion in the graft after initial placement.

2. Procedure

The open thrombectomy procedure involves several critical steps to ensure the effective removal of the thrombus:

  • Step 1: Incision The surgeon begins by making an incision in the skin directly over the site of the arterial or venous graft. This incision provides access to the graft for the subsequent steps of the procedure.
  • Step 2: Placement of Vessel Loops Once the incision is made, vessel loops are placed both proximal and distal to the thrombus. This step is crucial as it helps to control blood flow during the thrombectomy, allowing the surgeon to work without excessive bleeding.
  • Step 3: Opening the Graft The next step involves carefully opening the graft to expose the thrombus. This direct access is necessary for the effective removal of the clot.
  • Step 4: Thrombus Removal The thrombus is then removed through direct exposure. The surgeon may utilize techniques such as applying arterial back pressure or manual massage to assist in expelling the clot from the graft.
  • Step 5: Angiography After the thrombus has been removed, an angiography may be performed to verify that the entire clot has been successfully extracted and to ensure that the graft remains patent, meaning it is open and unobstructed.
  • Step 6: Graft Revision (if necessary) If stenosis is identified during the procedure, the surgeon may proceed with graft revision. This could involve enlarging the stenosed area using a patch graft or excising the narrowed segment and replacing it with a tubular graft segment.

3. Post-Procedure

Post-procedure care following an open thrombectomy includes monitoring the patient for any signs of complications, such as bleeding or infection at the incision site. Patients may also undergo follow-up imaging studies to assess the patency of the graft and ensure that no further thrombosis has occurred. Recovery time can vary based on the individual patient's health and the complexity of the procedure, but patients are typically advised to follow specific postoperative instructions provided by their healthcare team to promote healing and prevent complications.

Short Descr REMOVAL OF CLOT IN GRAFT
Medium Descr THRMBC ARTL/VEN GRF OTH/THN HEMO GRF/FSTL
Long Descr Thrombectomy of arterial or venous graft (other than hemodialysis graft or fistula);
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) 1 - Statutory payment restriction for assistants at surgery applies 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
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P2F - Major procedure, cardiovascular-Other
MUE 2
CCS Clinical Classification 61 - Other OR procedures on vessels other than head and neck
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).
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.
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.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 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.)
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
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)
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
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
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2010-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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