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Official Description

Pelvic lymphadenectomy, including external iliac, hypogastric, and obturator nodes (separate procedure)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 38770 refers to a surgical procedure known as pelvic lymphadenectomy, which involves the removal of lymph nodes located in the pelvic region. This procedure specifically targets the external iliac, hypogastric, and obturator nodes and is classified as a separate procedure. During the operation, an incision is made in the abdomen; however, the peritoneum, which is the lining of the abdominal cavity, is not opened. The surgical team carefully explores the pelvic lymph nodes on the side of the malignancy, ensuring that critical structures such as the genitofemoral nerve and the psoas muscle are preserved to prevent complications. The fatty tissue surrounding the mid-portion of both common iliac vessels, as well as along the internal and external iliac vessels, is meticulously stripped away to access the lymph nodes. The excised iliac, hypogastric, and obturator nodes are then sent for pathological evaluation, which is separately reportable. Finally, the abdominal incision is closed in layers to promote proper healing and recovery.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The pelvic lymphadenectomy procedure, coded as CPT® 38770, is indicated for patients with malignancies in the pelvic region. The specific indications for performing this procedure include:

  • Malignancy in the Pelvic Area The procedure is typically performed when there is a suspected or confirmed malignancy that necessitates the evaluation and removal of pelvic lymph nodes to assess the extent of cancer spread.
  • Staging of Cancer This procedure is often indicated for staging purposes, allowing for a better understanding of the cancer's progression and aiding in the development of an appropriate treatment plan.
  • Therapeutic Intervention In some cases, pelvic lymphadenectomy may be performed as a therapeutic intervention to remove cancerous lymph nodes that may contribute to the patient's overall disease burden.

2. Procedure

The pelvic lymphadenectomy procedure involves several critical steps, which are outlined as follows:

  • Step 1: Incision The procedure begins with an incision made in the abdomen. This incision is strategically placed to provide access to the pelvic region while avoiding any unnecessary trauma to surrounding tissues.
  • Step 2: Exploration of Pelvic Lymph Nodes Once the incision is made, the surgeon carefully explores the pelvic lymph nodes on the side of the malignancy. This exploration is conducted without opening the peritoneum, which helps to minimize complications and maintain the integrity of the abdominal cavity.
  • Step 3: Preservation of Critical Structures During the exploration, the surgical team takes special care to preserve important anatomical structures, including the genitofemoral nerve and the psoas muscle. This preservation is crucial to prevent postoperative complications and ensure the patient's functional recovery.
  • Step 4: Stripping of Fatty Tissue The next step involves stripping fatty tissue from the mid-portion of both common iliac vessels and along the internal and external iliac vessels. This dissection is performed to expose the lymph nodes that need to be excised.
  • Step 5: Excision of Lymph Nodes The iliac, hypogastric, and obturator lymph nodes are then excised. These nodes are critical for pathological evaluation, as their examination can provide valuable information regarding the presence of malignancy.
  • Step 6: Pathological Evaluation The excised lymph nodes are sent for separate pathological evaluation, which is essential for determining the cancer's stage and guiding further treatment decisions.
  • Step 7: Closure of Incision Finally, the abdominal incision is closed in layers. This layered closure technique is employed to promote optimal healing and reduce the risk of complications such as infection or hernia formation.

3. Post-Procedure

After the pelvic lymphadenectomy procedure, patients can expect a recovery period that may vary based on individual circumstances. Post-procedure care typically includes monitoring for any signs of complications, such as infection or excessive bleeding. Patients may experience discomfort or pain at the incision site, which can be managed with appropriate pain relief measures. Follow-up appointments are essential to review the results of the pathological evaluation of the excised lymph nodes and to discuss any further treatment options that may be necessary based on the findings. It is also important for patients to adhere to any specific post-operative instructions provided by their healthcare team to ensure a smooth recovery process.

Short Descr REMOVE PELVIS LYMPH NODES
Medium Descr PEL LMPHADEC W/XTRNL ILIAC HYPOGSTR&OBTURATOR
Long Descr Pelvic lymphadenectomy, including external iliac, hypogastric, and obturator nodes (separate procedure)
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) P1G - Major procedure - 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)
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).
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).
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).
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).
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)
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)
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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