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Official Description

Closure of intestinal cutaneous fistula

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 44640 involves the surgical closure of an intestinal cutaneous fistula. An intestinal cutaneous fistula is defined as an abnormal connection or passage that forms between the intestine and the skin, which can lead to complications such as infection, fluid loss, and nutritional deficiencies. The surgical intervention is necessary to restore normal anatomy and function by eliminating this abnormal communication. During the procedure, the physician makes an incision in the abdomen to access the fistulous tract. This tract, which connects the intestine to the skin, is carefully located and severed at its opening in the intestine. The intestinal opening is then meticulously closed using sutures to prevent any further leakage of intestinal contents. Following this, the portion of the tract that lies within the abdominal wall is excised, and the abdominal wall is closed in layers to ensure proper healing and support. Finally, the surgical incision itself is closed, completing the procedure and aiming to restore the integrity of the abdominal wall and intestinal function.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The closure of an intestinal cutaneous fistula is indicated in cases where there is an abnormal communication between the intestine and the skin, which may result from various underlying conditions. The following are specific indications for performing this procedure:

  • Presence of an intestinal cutaneous fistula - This condition may arise due to surgical complications, inflammatory bowel disease, or trauma, necessitating surgical intervention to prevent further complications.
  • Infection or inflammation - The presence of infection or inflammation associated with the fistula can lead to significant morbidity, making closure essential for patient recovery.
  • Fluid and electrolyte imbalance - Fistulas can cause excessive fluid loss, leading to dehydration and electrolyte imbalances, which require surgical closure to restore normal physiological function.

2. Procedure

The procedure for the closure of an intestinal cutaneous fistula involves several critical steps, each aimed at ensuring the successful elimination of the fistula and restoration of normal anatomy.

  • Step 1: Incision - The surgeon begins by making an incision in the abdominal wall to gain access to the fistulous tract. This incision is strategically placed to allow for optimal visualization and manipulation of the affected area.
  • Step 2: Identification of the Fistulous Tract - Once the abdomen is opened, the surgeon carefully locates the fistulous tract. This step is crucial as it ensures that the entire tract is identified for complete excision.
  • Step 3: Severing the Tract - The fistulous tract is then severed at the intestinal opening. This involves cutting through the tissue to disconnect the abnormal passage from the intestine, which is essential for preventing any further leakage of intestinal contents.
  • Step 4: Closure of the Intestinal Opening - After severing the tract, the opening in the intestine is closed using sutures. This step is vital to restore the integrity of the intestinal wall and prevent complications such as leakage or infection.
  • Step 5: Excision of the Tract in the Abdominal Wall - The portion of the fistulous tract that lies within the abdominal wall is excised. This ensures that all remnants of the fistula are removed, reducing the risk of recurrence.
  • Step 6: Closure of the Abdominal Wall - The abdominal wall is then closed in layers. This layered closure technique is important for providing strength and support to the abdominal wall during the healing process.
  • Step 7: Closure of the Surgical Incision - Finally, the surgical incision made at the beginning of the procedure is closed, completing the operation and ensuring that the patient is left with a secure and well-healed abdominal wall.

3. Post-Procedure

After the closure of an intestinal cutaneous fistula, post-procedure care is essential for ensuring proper recovery and minimizing complications. Patients are typically monitored for signs of infection, leakage, or other complications. Pain management is also an important aspect of post-operative care, and patients may be prescribed analgesics as needed. Additionally, dietary modifications may be recommended to support healing and prevent stress on the gastrointestinal system. Follow-up appointments are crucial to assess the surgical site and ensure that the fistula has been successfully closed without recurrence. Patients should be educated on signs of complications that may require immediate medical attention, such as increased pain, fever, or unusual drainage from the surgical site.

Short Descr REPAIR BOWEL-SKIN FISTULA
Medium Descr CLOSURE INTESTINAL CUTANEOUS FISTULA
Long Descr Closure of intestinal cutaneous fistula
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 2
CCS Clinical Classification 96 - Other OR lower GI therapeutic 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.
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).
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).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
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
SG Ambulatory surgical center (asc) facility service
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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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