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Official Description

Nephrectomy, partial

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

An open partial nephrectomy, as described by CPT® Code 50240, is a surgical procedure aimed at removing a portion of the kidney while preserving the remaining healthy tissue. This procedure is typically indicated for patients with localized kidney tumors or lesions that necessitate removal without the need for a complete nephrectomy, which would involve the removal of the entire kidney. The surgery begins with a wide flank incision made just below the lower border of the ribs, allowing the surgeon to access the kidney effectively. Alternatively, an anterior subcostal approach may be employed, depending on the specific circumstances and the surgeon's preference. During the operation, careful attention is given to the kidney's vasculature to ensure that blood supply to the remaining kidney tissue is maintained. The renal artery is isolated, and a vascular loop is placed to control blood flow during the procedure. The surrounding perirenal fat is meticulously dissected away from the kidney to expose the lesion. Small lesions can be enucleated and excised using both blunt and sharp dissection techniques, while larger lesions may require additional measures such as diuresis, temporary occlusion of the renal artery supplying the tumor site, and renal hypothermia to minimize blood loss and protect the kidney's function. After the renal mass is resected, any bleeding is controlled through suture-ligation of the affected arteries and veins, and the parenchymal defect in the kidney is subsequently closed to restore the integrity of the organ.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure of partial nephrectomy is indicated for various conditions that affect the kidney, particularly when there are localized lesions or tumors that require surgical intervention. The following are the explicitly provided indications for performing a partial nephrectomy:

  • Localized Kidney Tumors The primary indication for a partial nephrectomy is the presence of localized tumors within the kidney that can be excised while preserving the surrounding healthy renal tissue.
  • Renal Masses Any renal mass that is determined to be operable and does not necessitate a complete nephrectomy may warrant this procedure.
  • Preservation of Renal Function The procedure is also indicated in cases where maintaining renal function is critical, particularly in patients with compromised kidney function or those with a single kidney.

2. Procedure

The steps involved in performing a partial nephrectomy are as follows:

  • Step 1: Incision The procedure begins with the surgeon making a wide flank incision just below the lower border of the ribs. This incision provides adequate access to the kidney. Alternatively, an anterior subcostal approach may be utilized based on the specific case and surgeon's discretion.
  • Step 2: Exposure of the Kidney Once the incision is made, the kidney and ureter are carefully exposed. It is crucial to preserve the kidney's vasculature during this step to maintain blood flow to the remaining kidney tissue.
  • Step 3: Isolation of the Renal Artery The renal artery is isolated, and a vascular loop is placed around it. This step is essential for controlling blood flow during the excision of the lesion.
  • Step 4: Dissection of Perirenal Fat The perirenal fat surrounding the kidney is meticulously dissected free to allow for clear visibility and access to the kidney lesion.
  • Step 5: Identification and Resection of the Lesion The kidney lesion is located, and small lesions are enucleated and excised using both blunt and sharp dissection techniques. For larger lesions, additional measures such as diuresis, temporary occlusion of the renal artery supplying the tumor site, and renal hypothermia may be employed to minimize blood loss and protect kidney function.
  • Step 6: Control of Bleeding After the renal mass is resected, any bleeding is controlled through suture-ligation of the affected arteries and veins to ensure hemostasis.
  • Step 7: Closure of the Parenchymal Defect Finally, the parenchymal defect in the kidney is closed, restoring the integrity of the organ and completing the procedure.

3. Post-Procedure

Post-procedure care following a partial nephrectomy involves monitoring the patient for any complications, such as bleeding or infection. Patients may require pain management and will be observed for signs of renal function impairment. Recovery typically includes a hospital stay for observation, followed by instructions for activity restrictions and follow-up appointments to assess kidney function and overall recovery. It is essential for patients to adhere to post-operative care guidelines to ensure optimal healing and recovery.

Short Descr NEPHRECTOMY PARTIAL
Medium Descr NEPHRECTOMY PARTIAL
Long Descr Nephrectomy, partial
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 104 - Nephrectomy, partial or complete
GC This service has been performed in part by a resident under the direction of a teaching physician
RT Right side (used to identify procedures performed on the right 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).
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).
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
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
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2025-01-01 Changed Short Description changed.
Pre-1990 Added Code added.
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