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Official Description

Excision of rectal tumor, transanal approach; including muscularis propria (ie, full thickness)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 45172 refers to the excision of a rectal tumor using a transanal approach, which is a minimally invasive surgical technique. This procedure involves the complete removal of the tumor along with a margin of healthy tissue, ensuring that the excised area is free of cancerous cells. The term "full thickness" indicates that the excision extends through all layers of the rectal wall, including the rectal mucosa, the muscularis mucosa, the submucosa, and the muscularis propria, which is the thick muscle layer responsible for the contraction of the rectum during bowel movements. This approach is particularly beneficial for tumors located within the rectum, as it allows for direct access to the tumor without the need for larger incisions that would be required in more invasive surgical methods. The procedure is typically performed with the aid of an anoscope, a tubular instrument that provides visualization of the rectal area, facilitating accurate tumor identification and excision. Following the removal of the tumor, frozen sections may be taken to confirm that the margins are clear of malignancy, and the specimen is sent for pathological evaluation to ensure proper diagnosis and treatment planning.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The excision of a rectal tumor via a transanal approach, as described by CPT® Code 45172, is indicated for the removal of rectal tumors that may be benign or malignant. The procedure is typically performed when the following conditions are present:

  • Rectal Tumor The presence of a tumor within the rectum that requires surgical intervention for removal.
  • Malignancy Concern Situations where there is a suspicion or diagnosis of rectal cancer necessitating excision to prevent further spread.
  • Localized Tumor Tumors that are localized and accessible via the transanal approach, allowing for effective removal without extensive surgical intervention.

2. Procedure

The procedure for excising a rectal tumor using CPT® Code 45172 involves several critical steps to ensure successful tumor removal and patient safety:

  • Step 1: Tumor Localization The surgeon begins by using an anoscope to locate the tumor within the rectum. This instrument allows for direct visualization of the rectal lining and aids in accurately identifying the tumor's position.
  • Step 2: Incision Once the tumor is located, the rectal mucosa is incised. The incision is made carefully to penetrate through the deeper tissues surrounding the tumor, ensuring that the tumor can be excised along with a margin of healthy tissue.
  • Step 3: Tumor Excision The tumor is then excised in its entirety, along with a margin of healthy tissue to ensure that no cancerous cells remain. This step is crucial for achieving clear margins and reducing the risk of recurrence.
  • Step 4: Frozen Section Analysis During the procedure, frozen sections of the excised tissue may be obtained. This allows for immediate pathological evaluation to confirm that the margins are clear of malignancy, which is essential for determining the success of the excision.
  • Step 5: Closure After the tumor has been successfully removed and margins confirmed, the incision in the rectum is closed using sutures. This step is important for restoring the integrity of the rectal wall and promoting healing.

3. Post-Procedure

Following the excision of the rectal tumor, patients may require specific post-procedure care to ensure proper recovery. This includes monitoring for any signs of complications such as bleeding or infection at the surgical site. Patients are typically advised to follow a specific diet and may need to avoid strenuous activities for a period of time to facilitate healing. Additionally, follow-up appointments are essential to review the pathological results of the excised tissue and to monitor for any signs of recurrence. The healthcare provider will provide detailed instructions tailored to the individual patient's needs to ensure optimal recovery.

Short Descr EXC RECT TUM TRANSANAL FULL
Medium Descr EXC RCT TUM INCL MUSCULARIS PROPRIA
Long Descr Excision of rectal tumor, transanal approach; including muscularis propria (ie, full thickness)
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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Non office-based surgical procedure added in CY 2008 or later; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5E - Ambulatory procedures - other
MUE 2
CCS Clinical Classification 78 - Colorectal resection
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.
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).
54 Surgical care only: when 1 physician or other qualified health care professional performs a surgical procedure and another provides preoperative and/or postoperative management, surgical services may be identified by adding modifier 54 to the usual procedure number.
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.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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).
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
GW Service not related to the hospice patient's terminal condition
SG Ambulatory surgical center (asc) facility service
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
Date
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2011-01-01 Changed Guideline information changed.
2010-01-01 Added -
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