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Official Description

Axillary lymphadenectomy; complete

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

An axillary lymphadenectomy is a surgical procedure that involves the complete removal of axillary lymph nodes, which are critical components of the lymphatic system located in the armpit area. This procedure is typically indicated in cases where there is a need to assess or treat conditions such as breast cancer, where lymph nodes may harbor cancerous cells. The axillary lymph nodes are categorized into three levels based on their anatomical location relative to the pectoralis minor muscle: level I nodes are situated below the lower edge of the pectoralis minor, level II nodes are located underneath the muscle, and level III nodes are found above the muscle. During the procedure, a surgical incision is made in the lowest part of the axilla to access these nodes. The surgeon carefully identifies the borders of the pectoralis major and latissimus dorsi muscles, as well as the axillary vein, which is dissected from surrounding tissues to facilitate the removal of the lymph nodes. The procedure aims to excise not only the lymph nodes but also the surrounding fat pad, typically resulting in the removal of 15 to 25 axillary nodes. This thorough excision is crucial for ensuring that any cancerous or suspicious tissue is completely removed. After the lymph nodes are excised, a drain is placed to prevent fluid accumulation, and the surgical wound is subsequently closed. It is important to note that CPT® Code 38740 should be used for the excision of superficial lymph nodes, which includes those in level I, while CPT® Code 38745 is designated for the complete removal of axillary lymph nodes encompassing levels I through III.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The axillary lymphadenectomy procedure is primarily indicated for the following conditions:

  • Breast Cancer: This procedure is often performed to assess the spread of breast cancer by removing lymph nodes that may contain cancerous cells.
  • Suspicious Lymph Nodes: It is indicated when lymph nodes are suspected to be involved in a malignancy based on imaging studies or physical examination findings.
  • Staging of Cancer: The procedure aids in the staging of cancer, which is essential for determining the appropriate treatment plan.

2. Procedure

The axillary lymphadenectomy procedure involves several critical steps to ensure the complete removal of axillary lymph nodes:

  • Step 1: Incision An incision is made in the lowest area of the axilla to provide access to the axillary lymph nodes. This incision is strategically placed to minimize damage to surrounding tissues.
  • Step 2: Identification of Muscles The surgeon identifies the borders of the pectoralis major and latissimus dorsi muscles. This identification is crucial for navigating the surgical field and avoiding injury to these important structures.
  • Step 3: Dissection of the Axillary Vein The axillary vein is carefully dissected from the surrounding tissue. This step is vital to ensure that the vein is preserved while allowing access to the lymph nodes.
  • Step 4: Protection of Neural Structures The axillary neural structures are identified and protected throughout the procedure to prevent nerve damage, which could lead to complications such as loss of sensation or motor function in the arm.
  • Step 5: Excision of Lymph Nodes The axillary lymph nodes, along with the surrounding fat pad, are excised. Typically, 15 to 25 axillary nodes are removed from beneath the axillary vein and along the nerves and muscles of the axilla.
  • Step 6: Drain Placement After the excision, a drain is placed to prevent fluid accumulation in the surgical site, which can lead to complications such as seroma formation.
  • Step 7: Wound Closure Finally, the surgical wound is closed using appropriate suturing techniques to promote healing and minimize scarring.

3. Post-Procedure

Post-procedure care following an axillary lymphadenectomy includes monitoring for any signs of complications such as infection, bleeding, or fluid accumulation. Patients may be advised to keep the surgical site clean and dry, and to follow specific instructions regarding drain care if a drain has been placed. Pain management is also an important aspect of post-operative care, and patients may be prescribed analgesics to manage discomfort. Additionally, patients should be informed about potential side effects, such as lymphedema, which is swelling that can occur due to the removal of lymph nodes. Follow-up appointments are essential to assess recovery and to discuss any further treatment options if necessary.

Short Descr REMOVE ARMPIT LYMPH NODES
Medium Descr AXILLARY LYMPHADENECTOMY COMPLETE
Long Descr Axillary lymphadenectomy; complete
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
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) P5E - Ambulatory procedures - other
MUE 1
CCS Clinical Classification 67 - Other therapeutic procedures, hemic and lymphatic system

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

38900 Addon Code MPFS Status: Active Code APC N ASC N1 Intraoperative identification (eg, mapping) of sentinel lymph node(s) includes injection of non-radioactive dye, when performed (List separately in addition to code for primary procedure)
LT Left side (used to identify procedures performed on the left side of the body)
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.
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).
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
Q1 Routine 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)
SG Ambulatory surgical center (asc) facility service
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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