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Official Description

Endoscopic retrograde cholangiopancreatography (ERCP); with placement of endoscopic stent into biliary or pancreatic duct, including pre- and post-dilation and guide wire passage, when performed, including sphincterotomy, when performed, each stent

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 43274 is known as Endoscopic Retrograde Cholangiopancreatography (ERCP) with the placement of an endoscopic stent into either the biliary or pancreatic duct. This complex procedure involves the use of an endoscope, which is a flexible tube equipped with a camera and light, allowing the physician to visualize the internal structures of the digestive system. The endoscope is carefully passed through the esophagus, stomach, and into the duodenum, specifically targeting the ampulla of Vater, where the pancreatic duct and common bile duct converge. This area is critical for the drainage of bile and pancreatic juices into the small intestine. During the procedure, if necessary, a sphincterotomy is performed, which involves cutting the muscle that controls the opening between the bile duct and pancreatic duct. This step facilitates the passage of a catheter into the ducts. Once access is achieved, contrast dye is injected through the catheter to enhance imaging of the biliary tract, gallbladder, and pancreas, allowing for the identification of any obstructions or abnormalities. Following the imaging, a guidewire is introduced, and a balloon catheter is advanced over this guidewire to the site of any strictures or narrowing within the ducts. The balloon is then inflated to dilate the narrowed area, which is crucial for restoring normal flow. After dilation, the guidewire is removed, and a stent delivery catheter is used to place a stent within the narrowed duct. The stent serves to keep the duct open, ensuring continued drainage. Finally, the stent is seated properly by inflating a balloon catheter within it, and additional contrast is injected to confirm the correct placement of the stent within the biliary or pancreatic duct. This procedure is essential for managing conditions that obstruct the normal flow of bile or pancreatic secretions, thereby alleviating symptoms and preventing complications.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 43274 is indicated for various conditions affecting the biliary and pancreatic ducts. These indications may include:

  • Obstructive jaundice - A condition where bile flow is blocked, leading to yellowing of the skin and eyes.
  • Cholelithiasis - The presence of gallstones that may obstruct the bile duct.
  • Pancreatitis - Inflammation of the pancreas that may require drainage of obstructed ducts.
  • Strictures - Narrowing of the bile or pancreatic ducts that can impede normal drainage.
  • Malignancies - Tumors in the pancreas or bile duct that may cause obstruction.

2. Procedure

The procedure involves several critical steps to ensure successful access and treatment of the biliary or pancreatic ducts. These steps include:

  • Step 1: Endoscope Insertion - The endoscope is carefully inserted through the patient's mouth, advancing through the esophagus and stomach until it reaches the duodenum, specifically the ampulla of Vater, where the bile duct and pancreatic duct converge.
  • Step 2: Sphincterotomy (if performed) - If necessary, the muscle between the bile duct and pancreatic duct is severed to facilitate the passage of a catheter. This step is known as sphincterotomy and is crucial for gaining access to the ducts.
  • Step 3: Cannulation - A smaller catheter is introduced through the endoscope to cannulate the ampulla of Vater. This allows for the injection of contrast material into the ducts.
  • Step 4: Contrast Injection - Contrast dye is injected to visualize the biliary tract, gallbladder, and pancreas. This imaging is essential for identifying any obstructions or abnormalities within the ducts.
  • Step 5: Guidewire Placement - A guidewire is placed through the catheter to facilitate further interventions.
  • Step 6: Balloon Dilation - A balloon catheter is advanced over the guidewire to the site of any stricture. The balloon is inflated to dilate the narrowed region, restoring normal ductal flow.
  • Step 7: Stent Placement - After dilation, the guidewire is removed, and a stent delivery catheter is advanced across the narrowed area. The stent is positioned and deployed within the biliary or pancreatic duct to maintain patency.
  • Step 8: Stent Seating - A balloon catheter is again delivered and positioned within the stent, which is inflated to ensure proper seating of the stent within the duct.
  • Step 9: Final Imaging - Additional contrast is injected to visualize the biliary system once more, confirming the correct placement of the stent and ensuring that the duct is adequately open.

3. Post-Procedure

Post-procedure care following an ERCP with stent placement includes monitoring the patient for any immediate complications, such as pancreatitis, bleeding, or infection. Patients may be observed for a short period in a recovery area before being discharged. Instructions regarding diet, activity level, and follow-up appointments will be provided. It is essential for patients to report any unusual symptoms, such as fever, abdominal pain, or jaundice, to their healthcare provider promptly. Follow-up imaging or additional procedures may be necessary to assess the stent's function and the condition of the biliary or pancreatic ducts.

Short Descr ERCP DUCT STENT PLACEMENT
Medium Descr ERCP STENT PLACEMENT BILIARY/PANCREATIC DUCT
Long Descr Endoscopic retrograde cholangiopancreatography (ERCP); with placement of endoscopic stent into biliary or pancreatic duct, including pre- and post-dilation and guide wire passage, when performed, including sphincterotomy, when performed, each stent
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 43260  Endoscopic retrograde cholangiopancreatography (ERCP); 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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8B - Endoscopy - upper gastrointestinal
MUE 2

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

0397T Addon Code MPFS Status: Carrier Priced APC N ASC N1 Endoscopic retrograde cholangiopancreatography (ERCP), with optical endomicroscopy (List separately in addition to code for primary procedure)
43273 Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Illustration for Code Endoscopic cannulation of papilla with direct visualization of pancreatic/common bile duct(s) (List separately in addition to code(s) for primary procedure)
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).
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.
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
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.
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
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AG Primary physician
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.
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.
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.
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).
95 Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system: synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
AM Physician, team member service
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
ET Emergency services
GA Waiver of liability statement issued as required by payer policy, individual case
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
KX Requirements specified in the medical policy have been met
LT Left side (used to identify procedures performed on the left side of the body)
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
PT Colorectal cancer screening test; converted to diagnostic test or other procedure
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)
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
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
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
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2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2014-01-01 Added Added
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