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Official Description

Colonoscopy, flexible; with ablation of tumor(s), polyp(s), or other lesion(s) (includes pre- and post-dilation and guide wire passage, when performed)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A flexible colonoscopy is a diagnostic and therapeutic procedure that involves the use of a flexible colonoscope to visualize the interior of the colon and rectum. During this procedure, the colonoscope, which is a long, flexible tube equipped with a camera and light source, is inserted into the rectum and advanced through the entire colon to the cecum or the terminal ileum. The use of air insufflation is critical as it helps to expand the colon, allowing for better visualization of the mucosal surfaces by separating the folds of the colon. This enhanced view is essential for identifying any abnormal growths such as tumors, polyps, or other lesions that may require treatment. Once the lesions are identified, the procedure may involve the ablation of these growths. Ablation refers to the removal or destruction of tissue, and in this context, it is performed using a laser device that is introduced through the colonoscope. Prior to the ablation, if there are strictures or narrowed areas in the colon that may hinder access to the lesions, dilation may be necessary. This is achieved by inserting a guidewire through the colonoscope, followed by the passage of a series of rigid tubes or a balloon catheter to widen the lumen of the colon. The ablation process itself involves carefully targeting the lesions with the laser as the endoscope is retracted, ensuring that the entire lesion is destroyed. This procedure is repeated as necessary until all identified lesions have been effectively treated. After the ablation, the colon is re-examined to confirm that all lesions have been successfully destroyed and to check for any potential injuries that may have occurred during the procedure. This comprehensive approach ensures both the effective treatment of abnormal growths and the safety of the patient throughout the process.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The flexible colonoscopy with ablation is indicated for the following conditions:

  • Presence of Tumors The procedure is performed when tumors are detected within the colon or rectum that require removal or destruction.
  • Polyps It is indicated for the ablation of polyps, which are abnormal growths that can potentially develop into cancer if left untreated.
  • Other Lesions The procedure is also indicated for the treatment of other lesions that may be present in the colon or rectum, which could pose a risk to the patient's health.

2. Procedure

The procedure begins with the insertion of a flexible colonoscope into the rectum. The colonoscope is advanced through the colon, reaching the cecum or the terminal ileum. During this process, air is insufflated into the colon to expand it, which allows for better visualization of the mucosal surfaces. Once the colonoscope is in place, the physician carefully inspects the mucosa for any abnormalities, specifically targeting the site of the tumor(s), polyp(s), or other lesion(s) that require ablation.

  • Identification of Lesions The physician identifies the specific lesions that need to be treated, ensuring that they are clearly visible for the subsequent steps.
  • Dilation (if necessary) If the lesions are located in a narrowed area of the colon, dilation may be performed. A guidewire is inserted through the colonoscope, followed by the passage of a series of rigid tubes of increasing diameter or a balloon catheter to dilate the stricture, allowing better access to the lesions.
  • Ablation of Lesions Once access is secured, a laser device is introduced through the endoscope to the distal margin of the most distal lesion. The ablation process begins as the endoscope is retracted, with the laser destroying the lesion in a distal to proximal direction. This step is repeated until all targeted lesions have been effectively ablated.
  • Post-Ablation Dilation (if required) If further dilation is necessary after the lesions have been destroyed, this is performed again to ensure optimal access and treatment.
  • Final Examination After the ablation and any necessary dilation, the colon is re-examined using the endoscope to confirm that all lesions have been destroyed and to check for any injuries resulting from the procedure.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any immediate complications that may arise from the colonoscopy and ablation. Patients are typically advised to rest and may experience some discomfort or cramping following the procedure. It is essential to ensure that the patient is stable before discharge. Follow-up appointments may be scheduled to assess recovery and to discuss any further treatment options if necessary. Additionally, patients should be informed about signs of potential complications, such as severe abdominal pain, fever, or rectal bleeding, which would require immediate medical attention.

Short Descr COLONOSCOPY W/ABLATION
Medium Descr COLONOSCOPY FLX ABLATION TUMOR POLYP/OTHER LES
Long Descr Colonoscopy, flexible; with ablation of tumor(s), polyp(s), or other lesion(s) (includes pre- and post-dilation and guide wire passage, when performed)
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 3 - Special payment adjustment rules for multiple endoscopic 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) 1 - Statutory payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Endoscopic Base Code 45378  Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Multiple Reduction Applies
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) P8D - Endoscopy - colonoscopy
MUE 1
PT Colorectal cancer screening test; converted to diagnostic test or other procedure
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.
SG Ambulatory surgical center (asc) facility 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).
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
CR Catastrophe/disaster related
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.
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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).
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
GA Waiver of liability statement issued as required by payer policy, individual case
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
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
KS Glucose monitor supply for diabetic beneficiary not treated with insulin
KX Requirements specified in the medical policy have been met
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
QJ Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b)
RT Right side (used to identify procedures performed on the right side of the body)
X2 Continuous/focused services: for reporting services by clinicians whose expertise is needed for the ongoing management of a chronic disease or a condition that needs to be managed and followed with no planned endpoint to the relationship; reporting clinician service examples include but are not limited to: a rheumatologist taking care of the patient's rheumatoid arthritis longitudinally but not providing general primary care services
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2015-01-01 Added Added
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