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Official Description

Endovenous ablation therapy of incompetent vein, extremity, inclusive of all imaging guidance and monitoring, percutaneous, laser; first vein treated

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Percutaneous endovenous laser ablation therapy is a minimally invasive procedure designed to treat incompetent veins in the extremities. Incompetent veins are those that have valves which do not function properly, leading to issues such as varicose veins or chronic venous insufficiency. This procedure utilizes laser technology to close off these problematic veins, thereby redirecting blood flow to healthier veins. The process begins with the physician preparing the treatment site and ensuring that all necessary equipment is functioning correctly. Imaging guidance is crucial throughout the procedure, as it allows the physician to accurately locate the targeted vein and to visualize its entire length for effective treatment. Local anesthesia is administered to minimize discomfort during the procedure. The technique involves making a small incision to access the vein, followed by the introduction of a guidewire and a dilator to facilitate the placement of a sheath. Once the sheath is in place, a laser fiber is inserted and advanced along the vein, where laser energy is applied to the vein wall, causing it to collapse and seal shut. Continuous monitoring of various parameters, such as impedance and temperature, ensures the procedure's safety and effectiveness. This code, 36478, is specifically used for the first vein treated, while 36479 is designated for any additional veins treated in the same extremity through separate access points.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for the treatment of incompetent veins in the extremities, which may present with symptoms such as:

  • Varicose Veins Enlarged, twisted veins that are often visible under the skin and can cause discomfort.
  • Chronic Venous Insufficiency A condition where the veins cannot pump enough blood back to the heart, leading to swelling, pain, and skin changes.
  • Leg Swelling Accumulation of fluid in the legs due to poor venous return.
  • Skin Changes Alterations in skin color or texture, often associated with venous disease.

2. Procedure

The procedure involves several critical steps to ensure effective treatment of the incompetent vein:

  • Preparation of the Treatment Site The physician begins by preparing the area of the extremity where the incompetent vein is located. This includes cleaning the skin and ensuring that all necessary equipment, including the laser ablation catheter, is ready for use.
  • Imaging Guidance Setup Imaging guidance is established to accurately locate the targeted vein. This may involve ultrasound or other imaging techniques to map and mark the entire length of the vein that will be treated.
  • Administration of Local Anesthetic A local anesthetic is injected at the site of venous access to minimize discomfort during the procedure.
  • Incision and Venotomy A small incision is made in the skin, followed by a venotomy, which is the surgical opening of the vein to allow access for the treatment.
  • Guidewire and Dilator Introduction A guidewire is introduced into the vein to facilitate the next steps. A dilator is then advanced over the guidewire to prepare the vein for the insertion of a sheath.
  • Sheath Placement The dilator is exchanged for a sheath, which is then secured in place with a suture. This sheath serves as a conduit for the laser fiber.
  • Laser Fiber Insertion The guidewire is removed, and the laser fiber is introduced through the sheath. The fiber is advanced along the vein under continuous imaging guidance.
  • Anesthetic Infiltration An anesthetic is infiltrated into the perivenous space along the entire length of the vein to further minimize discomfort during the procedure.
  • Application of Laser Energy The physician continuously monitors impedance, power, and vein wall temperature while applying laser energy. The laser is activated as the fiber is withdrawn, effectively sealing the vein.

3. Post-Procedure

After the procedure, patients may be monitored for a short period to ensure there are no immediate complications. It is common for patients to experience some bruising or discomfort at the treatment site, which typically resolves over time. Patients are often advised to wear compression stockings to support the healing process and improve blood circulation. Follow-up appointments may be scheduled to assess the effectiveness of the treatment and to monitor for any potential complications. It is important for patients to adhere to any post-procedure care instructions provided by their healthcare provider to ensure optimal recovery.

Short Descr ENDOVENOUS LASER 1ST VEIN
Medium Descr ENDOVEN ABLTJ INCMPTNT VEIN XTR LASER 1ST VEIN
Long Descr Endovenous ablation therapy of incompetent vein, extremity, inclusive of all imaging guidance and monitoring, percutaneous, laser; first vein treated
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
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) 1 - Statutory payment restriction for assistants at surgery applies 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 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) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 63 - Other non-OR therapeutic cardiovascular procedures

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

36479 Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Endovenous ablation therapy of incompetent vein, extremity, inclusive of all imaging guidance and monitoring, percutaneous, laser; subsequent vein(s) treated in a single extremity, each through separate access sites (List separately in addition to code for primary procedure)
RT Right side (used to identify procedures performed on the right side of the body)
LT Left side (used to identify procedures performed on the left side of the body)
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.)
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.
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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).
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
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.
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
AG Primary physician
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).
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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.)
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)
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
GZ Item or service expected to be denied as not reasonable and necessary
KX Requirements specified in the medical policy have been met
LC Left circumflex coronary artery
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
SG Ambulatory surgical center (asc) facility service
T1 Left foot, second digit
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
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
2011-01-01 Changed Short description changed.
2005-01-01 Added First appearance in code book in 2005.
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