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Official Description

Anastomosis, of intrahepatic ducts and gastrointestinal tract

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

An anastomosis of intrahepatic ducts and the gastrointestinal tract, represented by CPT® Code 47765, is a surgical procedure aimed at creating a connection between the intrahepatic bile ducts and the gastrointestinal tract. This procedure is commonly referred to as a biliary bypass and is primarily indicated for the treatment of biliary obstruction, which can occur due to various conditions affecting the bile ducts. The procedure involves making an abdominal incision to access the liver, gallbladder, and a segment of the small intestine or stomach. During the operation, the obstructed bile duct is carefully divided above the site of obstruction, and the ends are sutured closed to prevent leakage. Subsequently, a segment of the gastrointestinal tract, typically the jejunum or stomach, is mobilized and brought into proximity with the bile duct. The bile duct is then incised longitudinally, allowing for the anastomosis to occur. This connection facilitates the direct drainage of bile from the intrahepatic bile ducts into the small intestine, thereby alleviating the obstruction and restoring normal bile flow. The surgical site is irrigated, and drains may be placed as necessary before the abdominal incision is closed in layers to promote proper healing.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The anastomosis of intrahepatic ducts and gastrointestinal tract, coded as CPT® 47765, is indicated for the following conditions:

  • Biliary Obstruction - This procedure is performed to relieve blockages in the bile ducts that can lead to complications such as jaundice, cholangitis, or biliary cirrhosis.

2. Procedure

The procedure for anastomosis of intrahepatic bile ducts to the gastrointestinal tract involves several critical steps:

  • Step 1: Abdominal Incision - An abdominal incision is made in the midline to provide access to the liver, gallbladder, and a segment of the small intestine or stomach. This incision allows the surgeon to visualize and manipulate the necessary structures within the abdominal cavity.
  • Step 2: Exposure of the Liver and Bile Ducts - The liver hilum is dissected to expose the intrahepatic bile ducts. This step is crucial as it allows the surgeon to identify the obstructed bile duct that requires intervention.
  • Step 3: Division of the Obstructed Bile Duct - The obstructed bile duct is carefully divided above the site of obstruction. The ends of the bile duct are then closed with sutures to prevent any bile leakage into the abdominal cavity.
  • Step 4: Mobilization of the Gastrointestinal Tract - A segment of the gastrointestinal tract, typically the jejunum or stomach, is mobilized and brought up to the bile duct. This mobilization is essential to facilitate the anastomosis.
  • Step 5: Incision of the Bile Duct and Gastrointestinal Tract - The bile duct is incised longitudinally to create an opening for the anastomosis. Similarly, an incision is made in the mobilized segment of the gastrointestinal tract.
  • Step 6: Anastomosis - The intrahepatic bile duct is anastomosed to the gastrointestinal tract, allowing bile to drain directly from the bile duct into the small intestine or stomach. This connection is vital for restoring normal bile flow and alleviating the obstruction.
  • Step 7: Closure of the Surgical Site - After the anastomosis is completed, the surgical wound is irrigated to reduce the risk of infection. Drains may be placed as needed to facilitate fluid drainage, and the abdominal incision is closed in layers to promote proper healing.

3. Post-Procedure

Post-procedure care following the anastomosis of intrahepatic bile ducts to the gastrointestinal tract includes monitoring for any signs of complications such as infection, bile leakage, or obstruction at the anastomosis site. Patients may require supportive care, including pain management and nutritional support, as they recover. The surgical team will provide specific instructions regarding activity restrictions and follow-up appointments to ensure proper healing and assess the success of the procedure.

Short Descr FUSE LIVER DUCTS & BOWEL
Medium Descr ANAST INTRAHEPATC DUCTS & GI TRACT
Long Descr Anastomosis, of intrahepatic ducts and gastrointestinal tract
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 99 - Other OR gastrointestinal therapeutic procedures
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).
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.
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.)
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).
GC This service has been performed in part by a resident under the direction of a teaching physician
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