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Official Description

Cystectomy, partial; simple

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Partial cystectomy, as defined by CPT® Code 51550, is a surgical procedure that involves the removal of a portion of the bladder. This procedure is primarily indicated for patients with localized malignant neoplasms of the bladder, which are tumors that are confined to a specific area and have not spread extensively. The surgical approach typically begins with the exposure of the bladder through a low midline or transverse suprapubic incision, allowing the surgeon access to the bladder for the necessary intervention. Depending on the location of the tumor, the surgical approach may vary; lesions located in the posterior bladder are generally accessed via an intraperitoneal approach, while those situated in the dome or anterior bladder are approached extraperitoneally. During the procedure, if indicated, a pelvic lymph node dissection may be performed to assess the spread of cancer. The bladder is carefully mobilized, and stay sutures are placed at a distance from the lesion to facilitate a clear view of the area being treated. The bladder is then incised between these stay sutures, allowing for adequate visualization of the lesion. The excision involves removing the affected portion of the bladder along with surrounding perivesical fat and peritoneum, ensuring that a margin of healthy tissue is included to minimize the risk of cancer recurrence. After the lesion is excised, the bladder wall is reconstructed by closing the submucosa and muscle in layers, ensuring proper healing and function of the bladder post-surgery. This procedure is classified as a simple partial cystectomy, distinguishing it from more complicated cases that may involve prior surgeries, radiation effects, or difficult-to-access lesions.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

Partial cystectomy is performed for the following indications:

  • Localized Malignant Neoplasm of the Bladder - This procedure is primarily indicated for patients diagnosed with tumors that are confined to a specific area of the bladder and have not metastasized.

2. Procedure

The procedure for a simple partial cystectomy involves several key steps:

  • Step 1: Incision - The surgeon begins by making a low midline or transverse suprapubic incision to expose the bladder. This incision provides access to the bladder for the subsequent surgical steps.
  • Step 2: Approach to Lesion - Depending on the location of the tumor, the approach may vary. Lesions located in the posterior bladder are approached intraperitoneally, while those in the dome or anterior bladder are approached extraperitoneally.
  • Step 3: Pelvic Lymph Node Dissection - If necessary, a pelvic lymph node dissection is performed to evaluate the extent of cancer spread. This step is crucial for staging and treatment planning.
  • Step 4: Mobilization of the Bladder - The bladder is carefully mobilized to allow for better access to the lesion. Stay sutures are placed at a distance from the lesion to facilitate visualization and manipulation of the bladder.
  • Step 5: Incision of the Bladder - The bladder is incised between the stay sutures, which allows the surgeon to enlarge the incision for optimal visualization of the lesion.
  • Step 6: Excision of the Lesion - The portion of the bladder containing the lesion is excised, along with surrounding perivesical fat and peritoneum. Care is taken to remove a margin of healthy tissue to ensure complete removal of the cancerous cells.
  • Step 7: Closure of the Bladder - After the lesion is removed, the bladder wall is reconstructed by closing the submucosa and muscle in layers, ensuring proper healing and function of the bladder.

3. Post-Procedure

Post-procedure care for patients undergoing a simple partial cystectomy typically includes monitoring for complications such as bleeding or infection. Patients may require a catheter for urinary drainage for a period following the surgery to allow the bladder to heal properly. Follow-up appointments are essential to assess recovery and monitor for any signs of recurrence of the malignancy. The healthcare team will provide specific instructions regarding activity restrictions, pain management, and signs of complications that should prompt immediate medical attention.

Short Descr PARTIAL REMOVAL OF BLADDER
Medium Descr CYSTECTOMY PARTIAL SIMPLE
Long Descr Cystectomy, partial; simple
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) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
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 112 - Other OR therapeutic procedures of urinary tract
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.
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).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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
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)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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