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Official Description

Laparoscopy, surgical; nephrectomy, including partial ureterectomy

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 50546 refers to a laparoscopic nephrectomy, which is a minimally invasive surgical technique used to remove a kidney. This procedure also includes a partial ureterectomy, which involves the removal of a portion of the ureter, the tube that carries urine from the kidney to the bladder. The laparoscopic approach is characterized by the use of small incisions in the abdominal wall, through which specialized instruments and a camera (laparoscope) are inserted. This method allows for reduced recovery time, less postoperative pain, and minimal scarring compared to traditional open surgery. During the procedure, the abdomen is inflated with air (pneumoperitoneum) to create a working space for the surgeon. The surgeon carefully dissects and mobilizes the kidney and surrounding structures, identifies and divides the renal artery and vein, and removes the affected kidney along with the diseased section of the ureter. The use of a bag to contain the kidney and ureter during removal helps to ensure that the specimen is handled safely and effectively. Overall, this procedure is performed to treat various kidney conditions, including tumors, chronic infections, or other diseases affecting kidney function.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The laparoscopic nephrectomy with partial ureterectomy, as described by CPT® Code 50546, is indicated for various medical conditions affecting the kidney and ureter. These indications may include:

  • Renal Tumors The presence of malignant or benign tumors in the kidney that necessitate removal to prevent further complications or progression of disease.
  • Chronic Kidney Infections Persistent infections that do not respond to conservative treatment and may lead to kidney damage.
  • Kidney Stones Large or recurrent kidney stones that cause obstruction or significant pain, which may require surgical intervention.
  • Congenital Anomalies Structural abnormalities of the kidney or ureter that impair function or lead to complications.
  • Trauma Injury to the kidney that results in significant damage or hemorrhage, requiring surgical removal.

2. Procedure

The laparoscopic nephrectomy with partial ureterectomy involves several key procedural steps, which are detailed as follows:

  • Step 1: The procedure begins with the patient being placed under general anesthesia. Small portal incisions are made in the abdominal wall to facilitate access to the abdominal cavity.
  • Step 2: Pneumoperitoneum is achieved by insufflating the abdomen with air, creating a working space for the surgeon to operate.
  • Step 3: Trocars, which are specialized instruments, are inserted through the incisions, and a laparoscope is introduced through an umbilical port to provide visualization of the surgical field.
  • Step 4: The lateral line of Toldt is identified and incised to mobilize the peritoneum over the kidney, allowing for better access and visualization of the anterior surface of the kidney.
  • Step 5: The colon is mobilized and rolled medially to expose the kidney and surrounding structures. The ureter and vascular structures are identified and retracted to facilitate access to the lower pole of the kidney and the renal hilum.
  • Step 6: The lower pole of the kidney is dissected free from surrounding structures, and the kidney is retracted laterally and superiorly to access the renal hilum.
  • Step 7: The renal artery and vein are identified, dissected, and divided to detach the kidney from its blood supply.
  • Step 8: The diseased section of the ureter is also dissected and divided, ensuring complete removal of the affected tissue.
  • Step 9: The kidney is mobilized from any remaining lateral and superior attachments, preparing it for removal.
  • Step 10: The laparoscope is removed from the umbilical port and inserted into a lateral port to facilitate the next steps.
  • Step 11: A bag is inserted through the umbilical port to contain the kidney and the section of diseased ureter during removal.
  • Step 12: The umbilical incision is extended, and the bag containing the kidney and ureter is carefully removed from the abdominal cavity.
  • Step 13: The surgical site is inspected for any bleeding, which is controlled as necessary. Surgical instruments are then removed, and the incisions are closed.

3. Post-Procedure

After the laparoscopic nephrectomy with partial ureterectomy, patients are typically monitored in a recovery area until the effects of anesthesia wear off. Post-procedure care may include pain management, monitoring for any signs of complications such as bleeding or infection, and ensuring proper hydration. Patients are usually encouraged to begin ambulating as soon as they are able to promote recovery. Follow-up appointments are essential to assess healing and to discuss any further treatment or monitoring that may be necessary. The expected recovery time is generally shorter than that of open surgery, with many patients returning to normal activities within a few weeks, depending on individual circumstances and overall health.

Short Descr LAPAROSCOPIC NEPHRECTOMY
Medium Descr LAPAROSCOPY NEPHRECTOMY W/PARTIAL URETERECT
Long Descr Laparoscopy, surgical; nephrectomy, including partial ureterectomy
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) P5E - Ambulatory procedures - other
MUE 1
CCS Clinical Classification 104 - Nephrectomy, partial or complete

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

49327 Addon Code MPFS Status: Active Code APC N ASC N1 Laparoscopy, surgical; with placement of interstitial device(s) for radiation therapy guidance (eg, fiducial markers, dosimeter), intra-abdominal, intrapelvic, and/or retroperitoneum, including imaging guidance, if performed, single or multiple (List separately in addition to code for primary procedure)
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)
GC This service has been performed in part by a resident under the direction of a teaching 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.
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).
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.
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
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).
AG Primary physician
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
GZ Item or service expected to be denied as not reasonable and necessary
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
2001-01-01 Changed Code description changed.
2000-01-01 Added First appearance in code book in 2000.
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