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Official Description

Exchange of biliary drainage catheter (eg, external, internal-external, or conversion of internal-external to external only), percutaneous, including diagnostic cholangiography when performed, imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 47536 involves the exchange of a biliary drainage catheter, which can be either external or internal-external, or the conversion of an internal-external catheter to an external-only catheter. Biliary drainage catheters are essential medical devices used to manage obstructions in the biliary system, which can arise from various causes such as gallstones, tumors, infections, inflammation, or trauma. The need for catheter exchange may occur when there is a buildup of sediment within the catheter that obstructs bile drainage or when the initial treatment has successfully decompressed the biliary system, allowing the patient to progress to further treatment options. During the procedure, fluoroscopic guidance is utilized to ensure accurate placement and exchange of the catheter. A guidewire is first advanced through the existing catheter to the site just above the obstruction for external-only catheters or past the obstruction into the duodenum for internal-external catheters. The old catheter is then removed, and a new catheter is inserted over the guidewire, ensuring that its tip is positioned appropriately above the obstruction or into the duodenum. In cases where an internal-external catheter is being converted to an external-only catheter, the same guidewire technique is employed. Additionally, stents may be placed at the site of obstruction to help maintain the patency of the bile duct. The new external catheter is advanced over the guidewire to the obstruction or stent placement, and the guidewire is subsequently removed. To confirm the correct placement and functionality of the catheter, a contrast dye may be injected through the catheter for cholangiography, allowing visualization of the biliary system. Finally, the catheter is secured to the skin, and a drainage bag is connected to the external portion of the catheter. CPT® Code 47536 encompasses all necessary imaging guidance, supervision, and interpretation of the radiological images associated with the exchange or conversion of biliary drainage catheters.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 47536 is indicated for the following conditions:

  • Obstruction due to Gallstones - The presence of gallstones can block the bile ducts, necessitating the use of a biliary drainage catheter to facilitate bile flow.
  • Obstruction due to Tumors - Tumors in the biliary tract can cause blockages, requiring catheter placement to manage bile drainage effectively.
  • Infection - Infections in the biliary system may lead to the need for drainage to alleviate symptoms and prevent complications.
  • Inflammation - Inflammatory conditions affecting the biliary system can obstruct bile flow, making catheter drainage necessary.
  • Trauma - Injuries to the biliary system may result in obstructions that require the placement of a biliary drainage catheter for proper management.

2. Procedure

The procedure for exchanging or converting a biliary drainage catheter involves several critical steps:

  • Step 1: Preparation - The patient is positioned appropriately, and the area of catheter insertion is prepared and sterilized to minimize the risk of infection.
  • Step 2: Fluoroscopic Guidance - Fluoroscopy is employed to visualize the biliary system and guide the procedure. This imaging technique allows the physician to see the existing catheter and the surrounding anatomy in real-time.
  • Step 3: Guidewire Advancement - A guidewire is carefully advanced through the existing biliary drainage catheter. For external-only catheters, the guidewire is positioned just above the obstruction, while for internal-external catheters, it is advanced past the obstruction into the duodenum.
  • Step 4: Catheter Removal - Once the guidewire is in place, the old catheter is removed, allowing for the insertion of a new catheter.
  • Step 5: New Catheter Insertion - A new biliary drainage catheter is inserted over the guidewire. For external-only catheters, the tip is positioned above the obstruction, and for internal-external catheters, it is placed into the duodenum.
  • Step 6: Stent Placement (if necessary) - If indicated, stents may be placed at the site of obstruction to maintain the patency of the bile duct.
  • Step 7: Guidewire Removal - After the new catheter is securely in place, the guidewire is removed.
  • Step 8: Cholangiography - Contrast dye may be injected through the catheter to perform cholangiography, allowing visualization of the biliary system to confirm proper catheter placement and assess the patency of the bile duct.
  • Step 9: Securing the Catheter - The catheter is then secured to the skin to prevent dislodgment, and a drainage bag is connected to the external portion of the catheter for bile collection.

3. Post-Procedure

After the procedure, patients are typically monitored for any immediate complications or adverse reactions. It is essential to ensure that the catheter remains patent and that bile is draining appropriately into the connected drainage bag. Patients may be advised on care instructions for the catheter site to prevent infection and ensure proper function. Follow-up imaging may be required to assess the effectiveness of the catheter placement and to monitor for any potential complications, such as re-obstruction or infection. The healthcare provider will also discuss any further treatment options based on the patient's condition and response to the procedure.

Short Descr EXCHANGE BILIARY DRG CATH
Medium Descr EXCHANGE BILIARY DRG CATHETER PRQ W/IMG GID RS&I
Long Descr Exchange of biliary drainage catheter (eg, external, internal-external, or conversion of internal-external to external only), percutaneous, including diagnostic cholangiography when performed, imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
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) 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.
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) I1F - Standard imaging - other
MUE 2

This is a primary code that can be used with these additional add-on codes.

47542 Addon Code MPFS Status: Active Code APC N ASC N1 Balloon dilation of biliary duct(s) or of ampulla (sphincteroplasty), percutaneous, including imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation, each duct (List separately in addition to code for primary procedure)
47543 Addon Code MPFS Status: Active Code APC N ASC N1 Endoluminal biopsy(ies) of biliary tree, percutaneous, any method(s) (eg, brush, forceps, and/or needle), including imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation, single or multiple (List separately in addition to code for primary procedure)
47544 Addon Code MPFS Status: Active Code APC N ASC N1 Removal of calculi/debris from biliary duct(s) and/or gallbladder, percutaneous, including destruction of calculi by any method (eg, mechanical, electrohydraulic, lithotripsy) when performed, imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation (List separately in addition to code for primary procedure)
GC This service has been performed in part by a resident under the direction of a teaching physician
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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).
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
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.
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
GW Service not related to the hospice patient's terminal condition
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.)
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.
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.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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.)
AG Primary physician
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
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
ET Emergency services
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
LT Left side (used to identify procedures performed on the left side of the body)
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
RT Right side (used to identify procedures performed on the right side of the body)
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
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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2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2016-01-01 Added Added
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