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Official Description

Transposition and/or reimplantation; carotid to subclavian artery

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 35695 involves the surgical transposition and/or reimplantation of the carotid artery to the subclavian artery. This complex vascular surgery is typically performed to address specific anatomical or pathological conditions that may necessitate the rerouting of blood flow between these two major arteries. The procedure begins with a supraclavicular incision at the base of the neck, allowing the surgeon access to the subclavian and carotid arteries. During the operation, the clavicular head is incised, and the scalene fat pad is mobilized and reflected superiorly to expose the underlying structures. Care is taken to identify and protect critical anatomical components, such as the phrenic nerve and the vagus nerve, which are essential for maintaining normal physiological function. The surgical steps involve meticulous dissection of the arteries to ensure that they are free from surrounding tissues, which is crucial for the success of the anastomosis. The procedure may also involve the preservation or ligation of the thoracic duct, depending on the specific circumstances encountered during surgery. The creation of a tunnel behind the sternocleidomastoid muscle and jugular vein facilitates the repositioning of the arteries. The use of systemic anticoagulants is standard practice to prevent thromboembolic complications during the procedure. Ultimately, the end of the carotid artery is sutured to the side of the subclavian artery, establishing a new pathway for blood flow. This procedure is critical in managing conditions that affect blood supply and can significantly impact patient outcomes.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 35695 is indicated for specific clinical scenarios where there is a need to reroute blood flow from the carotid artery to the subclavian artery. The following conditions may warrant this surgical intervention:

  • Vascular Obstruction: Conditions that cause blockage or narrowing of the carotid artery, leading to compromised blood flow.
  • Trauma: Injuries to the carotid or subclavian arteries that necessitate surgical correction to restore normal blood flow.
  • Congenital Anomalies: Anatomical variations or malformations that affect the normal function of the carotid and subclavian arteries.
  • Prior Surgical Interventions: Previous surgeries that may have altered the anatomy or function of the carotid or subclavian arteries, requiring reconfiguration.

2. Procedure

The procedure for CPT® Code 35695 involves several critical steps to ensure successful transposition and/or reimplantation of the carotid artery to the subclavian artery. The following procedural steps are performed:

  • Step 1: A supraclavicular incision is made at the base of the neck to provide access to the carotid and subclavian arteries. This incision allows the surgeon to visualize and manipulate the surrounding structures effectively.
  • Step 2: The clavicular head is incised, and the scalene fat pad is mobilized and reflected superiorly. This step is essential for exposing the underlying vascular structures and ensuring that they can be accessed without obstruction.
  • Step 3: The thoracic duct may be preserved or ligated, depending on the surgical findings. This decision is made to minimize complications related to lymphatic drainage during the procedure.
  • Step 4: The phrenic nerve is identified and protected throughout the procedure to prevent any postoperative respiratory complications.
  • Step 5: The anterior scalene muscle is transected to further facilitate access to the carotid and subclavian arteries.
  • Step 6: The proximal common carotid artery is dissected into the mediastinum to obtain adequate length for the anastomosis. This step is crucial for ensuring that there is enough arterial length to create a secure connection.
  • Step 7: A tunnel is created behind the sternocleidomastoid muscle and jugular vein, allowing for the repositioning of the carotid artery.
  • Step 8: The carotid artery is clamped distally and proximally, and then divided. The proximal stump of the carotid artery is oversewn to prevent any bleeding.
  • Step 9: The carotid artery is pulled through the previously created tunnel, bringing it into proximity with the planned anastomosis site in the subclavian artery.
  • Step 10: The subclavian artery is incised, and the end of the carotid artery is sutured to the side of the subclavian artery, completing the transposition and/or reimplantation.

3. Post-Procedure

After the completion of the procedure, patients are typically monitored for any signs of complications, such as bleeding or infection. Post-operative care may include the administration of anticoagulants to prevent thromboembolic events, as well as pain management strategies to ensure patient comfort. Patients may also require follow-up imaging studies to assess the patency of the newly established arterial connections. Recovery time can vary based on individual patient factors and the complexity of the procedure, but close monitoring and follow-up are essential to ensure optimal outcomes.

Short Descr ART TRNSPOSJ CAROTID SUBCLAV
Medium Descr TRPOS&/RIMPLTJ CAROTID SUBCLAVIAN ART
Long Descr Transposition and/or reimplantation; carotid to subclavian artery
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 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 59 - Other OR procedures on vessels of head and neck
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.
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).
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)
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
RT Right side (used to identify procedures performed on the right side of the body)
Date
Action
Notes
2013-01-01 Changed Short Descriptor changed.
1994-01-01 Added First appearance in code book in 1994.
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