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Official Description

Colotomy, for exploration, biopsy(s), or foreign body removal

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A colotomy is a surgical procedure that involves making an incision in the colon for various purposes, including exploration, biopsy, or the removal of foreign bodies. This procedure is typically performed when there is a need to investigate abnormalities within the colon, obtain tissue samples for diagnostic purposes, or extract any foreign objects that may have entered the gastrointestinal tract. During a colotomy, the surgeon first makes an incision in the abdomen to access the colon. The specific segment of the colon is then carefully exposed, removed from the abdominal cavity, and placed on the operating table for further examination. To facilitate the procedure, pressure is applied to the colon segment to express its contents, allowing for a clearer view of the internal structures. The colon is clamped both distal and proximal to the site of the incision to prevent the flow of intestinal contents during the operation. An incision is made in the colon itself, enabling the surgeon to explore the internal lumen for any abnormalities, collect tissue samples for pathological analysis, and remove any foreign bodies present. After the necessary interventions are completed, the colon incision is closed, the clamps are removed, and the colon segment is returned to the abdominal cavity. Finally, the abdominal incision is closed, completing the procedure.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The colotomy procedure is indicated for several specific reasons, primarily related to the need for direct access to the colon for diagnostic or therapeutic purposes. The following conditions may warrant the performance of a colotomy:

  • Exploration of the Colon This procedure is performed when there is a need to investigate potential abnormalities within the colon, such as tumors, strictures, or other pathological conditions that may not be visible through non-invasive imaging techniques.
  • Biopsy A colotomy allows for the collection of tissue samples from the colon for pathological examination. This is crucial in diagnosing conditions such as colorectal cancer, inflammatory bowel disease, or infections.
  • Foreign Body Removal The procedure is indicated when a foreign object is suspected to be lodged within the colon, which may cause obstruction, perforation, or other complications. A colotomy provides direct access to safely remove the foreign body.

2. Procedure

The colotomy procedure involves several critical steps to ensure effective exploration, biopsy, or foreign body removal. The following outlines the procedural steps involved:

  • Step 1: Incision in the Abdomen The procedure begins with the surgeon making an incision in the abdominal wall to gain access to the abdominal cavity. This incision is typically made in a location that allows for optimal exposure of the colon.
  • Step 2: Exposure of the Colon Once the abdominal cavity is accessed, the specific segment of the colon is identified, carefully exposed, and removed from the abdominal cavity. This step is crucial for allowing the surgeon to work directly on the colon.
  • Step 3: Expressing Contents After the colon segment is placed on the operating table, pressure is applied to express its contents. This helps to clear the lumen of any fecal matter, providing a clearer view for examination and intervention.
  • Step 4: Clamping the Colon The colon is then clamped both distal and proximal to the operative site. This clamping is essential to prevent the flow of intestinal contents during the procedure, maintaining a clean surgical field.
  • Step 5: Incision in the Colon An incision is made in the colon itself, allowing the surgeon to explore the internal lumen. This step is critical for identifying any abnormalities, taking biopsies, or locating foreign bodies.
  • Step 6: Tissue Sampling During the exploration, tissue samples are taken from the colon and sent to the laboratory for pathological examination. This is an important step for diagnosing any underlying conditions.
  • Step 7: Foreign Body Removal If a foreign body is identified during the procedure, it is carefully removed to prevent further complications, such as perforation or obstruction.
  • Step 8: Closing the Colon Incision After the necessary interventions are completed, the incision made in the colon is closed securely to restore the integrity of the intestinal wall.
  • Step 9: Returning the Colon Segment The distal and proximal clamps are then removed, and the colon segment is returned to the abdominal cavity, ensuring that it is positioned correctly.
  • Step 10: Closing the Abdominal Incision Finally, the abdominal incision is closed, completing the procedure and restoring the abdominal wall.

3. Post-Procedure

After the colotomy procedure, patients typically require monitoring for any signs of complications, such as infection or bleeding. Post-operative care may include pain management, dietary modifications, and gradual reintroduction of normal activities. The surgical site should be kept clean and dry, and any specific instructions provided by the healthcare team should be followed closely. Patients may also need follow-up appointments to assess healing and discuss the results of any biopsies taken during the procedure.

Short Descr INCISION OF LARGE BOWEL
Medium Descr COLOTOMY EXPLORATION/BIOPSY/FOREIGN BODY REMOVAL
Long Descr Colotomy, for exploration, biopsy(s), or foreign body removal
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 92 - Other bowel diagnostic procedures
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.
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
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
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