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CPT 47536: Percutaneous Biliary Drainage Catheter Exchange/Conversion

CPT code 47536 covers the image-guided percutaneous exchange or conversion of a biliary drainage catheter, a procedure used to maintain or restore external drainage of bile. This code is relevant nationally due to the frequency of biliary drainage procedures in patients with obstructive jaundice, malignant biliary obstruction, or post-procedural catheter management. The procedure is typically performed by interventional radiologists in hospital-based interventional suites or outpatient interventional centers using ultrasound and/or fluoroscopy, and it may include cholangiography with radiological supervision and interpretation.

Key payers included in the discussion are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for CPT code 47536, service and site-of-service considerations, and the types of utilization and coding scenarios typically associated with percutaneous biliary catheter management. The publication also summarizes common modifiers and billing considerations, offers benchmark-oriented observations for payers listed above, and outlines areas where policy updates and payer-specific coverage rules commonly affect claims processing. Data not available in the input is identified where applicable.

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Billing Code Overview

CPT code 47536 describes the percutaneous exchange or conversion of a biliary drainage catheter. The procedure involves exchanging an external or internal–external biliary drainage catheter or converting an internal–external catheter to external-only to permit bile drainage. The provider accesses the biliary system via a percutaneous (through-the-skin) route and performs the intervention under image guidance such as ultrasound and/or fluoroscopy. The service may include cholangiography if contrast dye is injected to image the bile ducts, and it encompasses all required radiological supervision and interpretation.

Service type: Percutaneous biliary drainage catheter exchange/conversion with image guidance
Typical site of service: Interventional radiology suite or hospital outpatient/inpatient setting where image-guided procedures are performed

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CPT 47536: Percutaneous Biliary Drainage Catheter Exchange/Conversion

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Billing Code Overview

Service type: Percutaneous biliary drainage catheter exchange/conversion with image guidance
Typical site of service: Interventional radiology suite or hospital outpatient/inpatient setting where image-guided procedures are performed

Clinical & Coding Specifications

Clinical Context

A 68-year-old patient with obstructive jaundice from a malignant hilar cholangiocarcinoma presents with progressive pruritus, cholestatic liver function test abnormalities, and recurrent episodes of cholangitis. Previously placed internal–external biliary drainage catheter has migrated or become occluded, causing inadequate biliary decompression. Interventional radiology is consulted to exchange the existing internal–external catheter for a new internal–external catheter or convert it to an external-only catheter to ensure continuous bile drainage.

The clinical workflow includes pre-procedure review of recent imaging and labs, informed consent, conscious sedation or monitored anesthesia care, ultrasound and fluoroscopic localization of the existing catheter tract, contrast cholangiography to delineate biliary anatomy and obstruction level, catheter exchange over guidewire or conversion to external drainage, securing the catheter, and post-procedure imaging and instructions. Radiological supervision and interpretation of imaging performed during the procedure are included.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	When reporting the radiologist's interpretation separate from technical component (rare for bundled percutaneous procedures).
`52`	Reduced services	When the procedure was partially reduced or not completed as planned due to clinical reasons.
`53`	Discontinued procedure	When the procedure is started but terminated due to extenuating circumstances or risks.
`59`	Distinct procedural service	When a separate, distinct procedural service is performed on the same day that is not usually bundled.
`62`	Two surgeons	When two surgeons share responsibility (rare for IR but used if co-surgeons documented).
`76`	Repeat procedure by same physician	When the same physician repeats the exchange or conversion later the same day.
`77`	Repeat procedure by another physician	When a different physician repeats the procedure the same day.
`78`	Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period.	For urgent re-intervention related to initial catheter exchange.
`79`	Unrelated procedure or service by same physician during postoperative period	If an unrelated procedure is performed during the global period.
`TC`	Technical component	When billing only the equipment, supplies, and technician portion (if separate from physician).
`LT`	Left side	When specifying laterality for services where laterality applies to catheter side.
`RT`	Right side	When specifying laterality for services where laterality applies to catheter side.
`QK`	Medical direction of 2–4 services with qualified individuals performing services	When the physician medically directs qualified individuals during the procedure.
`XE`	Separate encounter	When the service is distinct because it occurred during a separate encounter.

Taxonomy Code	Specialty	Notes
207PR0000X	Interventional Radiology	Primary specialty performing percutaneous biliary procedures.
207RP1001X	Diagnostic Radiology	Radiologists who may perform or supervise the procedure.
2080P0206X	General Surgery	Surgeons who perform biliary drainage procedures in select settings.
363LF0000X	Gastroenterology	Gastroenterologists may be involved in biliary management and coordination.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K83.1`	Obstruction of bile duct	Common indication for biliary drainage or catheter exchange to relieve obstruction.
`C22.9`	Malignant neoplasm of liver, unspecified	Primary or metastatic hepatic malignancy causing biliary obstruction that may require drainage.
`C24.0`	Malignant neoplasm of extrahepatic bile duct	Cholangiocarcinoma causing biliary obstruction requiring drainage.
`K83.0`	Cholangitis	Infection of bile ducts that may necessitate drainage and catheter management.
`K80.20`	Calculus of gallbladder without cholecystitis, unspecified	Gallstones causing biliary obstruction may lead to percutaneous drainage if endoscopic therapy is not possible.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`47536`	Exchange or conversion of a biliary drainage catheter; percutaneous, with image guidance and radiological supervision/interpretation	Primary procedure: exchange or conversion of internal–external biliary drainage catheter to allow bile drainage.
`47531`	Placement of percutaneous transhepatic biliary drainage catheter, initial placement	Performed when initial access and catheter placement are required instead of exchange.
`47532`	Placement of percutaneous transhepatic biliary drainage catheter, including imaging and radiological supervision	Alternative coding for initial catheter placement with imaging.
`47533`	Removal of percutaneous transhepatic biliary drainage catheter	Performed if catheter is permanently removed rather than exchanged or converted.
`47537`	Repositioning of biliary drainage catheter, percutaneous; without replacement	Used when catheter is repositioned rather than exchanged or converted.

CPT 47490: Percutaneous Gallbladder Drainage and Catheter Placement

CPT-47531-PERCUTANEOUS-CHOLANGIOGRAPHY-INJECTION-IMAGE-GUIDED

CPT 47531: Percutaneous Cholangiography Injection, Image-Guided

CPT-47532-PERCUTANEOUS-CHOLANGIOGRAPHY-NEW-ACCESS-CONTRAST-INJECTION

CPT 47532: Percutaneous Cholangiography with New Access and Contrast Injection

CPT-47533-PERCUTANEOUS-BILIARY-DRAINAGE-EXTERNAL

CPT 47533: Percutaneous Biliary Drainage, External

CPT-47534-PERCUTANEOUS-BILIARY-DRAINAGE-IMAGE-GUIDED

CPT 47534: Percutaneous Image-Guided Biliary Drainage

CPT-47535-PERCUTANEOUS-CONVERSION-INTERNAL-EXTERNAL-BILIARY-DRAINAGE

CPT 47535: Percutaneous Conversion to Internal–External Biliary Drainage

CPT-47537-BILIARY-CATHETER-REMOVAL-IMAGE-GUIDANCE-CHOLANGIOGRAPHY

CPT 47537: Image-Guided Biliary Drainage Catheter Removal

CPT-47538-PERCUTANEOUS-BILIARY-STENT-PLACEMENT

CPT 47538: Percutaneous Biliary Stent Placement

CPT-47539-PERCUTANEOUS-BILIARY-STENT-PLACEMENT

CPT 47539: Percutaneous Transhepatic Biliary Stent Placement

CPT-47540-PERCUTANEOUS-BILIARY-STENT-AND-DRAINAGE-CATHETER-PLACEMENT

CPT 47540: Percutaneous Biliary Stent and Drainage Catheter Placement

Showing 1–10 of 14

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	When reporting the radiologist's interpretation separate from technical component (rare for bundled percutaneous procedures).
`52`	Reduced services	When the procedure was partially reduced or not completed as planned due to clinical reasons.
`53`	Discontinued procedure	When the procedure is started but terminated due to extenuating circumstances or risks.
`59`	Distinct procedural service	When a separate, distinct procedural service is performed on the same day that is not usually bundled.
`62`	Two surgeons	When two surgeons share responsibility (rare for IR but used if co-surgeons documented).
`76`	Repeat procedure by same physician	When the same physician repeats the exchange or conversion later the same day.
`77`	Repeat procedure by another physician	When a different physician repeats the procedure the same day.
`78`	Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period.	For urgent re-intervention related to initial catheter exchange.
`79`	Unrelated procedure or service by same physician during postoperative period	If an unrelated procedure is performed during the global period.
`TC`	Technical component	When billing only the equipment, supplies, and technician portion (if separate from physician).
`LT`	Left side	When specifying laterality for services where laterality applies to catheter side.
`RT`	Right side	When specifying laterality for services where laterality applies to catheter side.
`QK`	Medical direction of 2–4 services with qualified individuals performing services	When the physician medically directs qualified individuals during the procedure.
`XE`	Separate encounter	When the service is distinct because it occurred during a separate encounter.

Taxonomy Code	Specialty	Notes
207PR0000X	Interventional Radiology	Primary specialty performing percutaneous biliary procedures.
207RP1001X	Diagnostic Radiology	Radiologists who may perform or supervise the procedure.
2080P0206X	General Surgery	Surgeons who perform biliary drainage procedures in select settings.
363LF0000X	Gastroenterology	Gastroenterologists may be involved in biliary management and coordination.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K83.1`	Obstruction of bile duct	Common indication for biliary drainage or catheter exchange to relieve obstruction.
`C22.9`	Malignant neoplasm of liver, unspecified	Primary or metastatic hepatic malignancy causing biliary obstruction that may require drainage.
`C24.0`	Malignant neoplasm of extrahepatic bile duct	Cholangiocarcinoma causing biliary obstruction requiring drainage.
`K83.0`	Cholangitis	Infection of bile ducts that may necessitate drainage and catheter management.
`K80.20`	Calculus of gallbladder without cholecystitis, unspecified	Gallstones causing biliary obstruction may lead to percutaneous drainage if endoscopic therapy is not possible.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`47536`	Exchange or conversion of a biliary drainage catheter; percutaneous, with image guidance and radiological supervision/interpretation	Primary procedure: exchange or conversion of internal–external biliary drainage catheter to allow bile drainage.
`47531`	Placement of percutaneous transhepatic biliary drainage catheter, initial placement	Performed when initial access and catheter placement are required instead of exchange.
`47532`	Placement of percutaneous transhepatic biliary drainage catheter, including imaging and radiological supervision	Alternative coding for initial catheter placement with imaging.
`47533`	Removal of percutaneous transhepatic biliary drainage catheter	Performed if catheter is permanently removed rather than exchanged or converted.
`47537`	Repositioning of biliary drainage catheter, percutaneous; without replacement	Used when catheter is repositioned rather than exchanged or converted.

CPT 47490: Percutaneous Gallbladder Drainage and Catheter Placement

CPT-47531-PERCUTANEOUS-CHOLANGIOGRAPHY-INJECTION-IMAGE-GUIDED

CPT 47531: Percutaneous Cholangiography Injection, Image-Guided

CPT-47532-PERCUTANEOUS-CHOLANGIOGRAPHY-NEW-ACCESS-CONTRAST-INJECTION

CPT 47532: Percutaneous Cholangiography with New Access and Contrast Injection

CPT-47533-PERCUTANEOUS-BILIARY-DRAINAGE-EXTERNAL

CPT 47533: Percutaneous Biliary Drainage, External

CPT-47534-PERCUTANEOUS-BILIARY-DRAINAGE-IMAGE-GUIDED

CPT 47534: Percutaneous Image-Guided Biliary Drainage

CPT-47535-PERCUTANEOUS-CONVERSION-INTERNAL-EXTERNAL-BILIARY-DRAINAGE

CPT 47535: Percutaneous Conversion to Internal–External Biliary Drainage

CPT-47537-BILIARY-CATHETER-REMOVAL-IMAGE-GUIDANCE-CHOLANGIOGRAPHY

CPT 47537: Image-Guided Biliary Drainage Catheter Removal

CPT-47538-PERCUTANEOUS-BILIARY-STENT-PLACEMENT

CPT 47538: Percutaneous Biliary Stent Placement

CPT-47539-PERCUTANEOUS-BILIARY-STENT-PLACEMENT

CPT 47539: Percutaneous Transhepatic Biliary Stent Placement

CPT-47540-PERCUTANEOUS-BILIARY-STENT-AND-DRAINAGE-CATHETER-PLACEMENT

CPT 47540: Percutaneous Biliary Stent and Drainage Catheter Placement

Showing 1–10 of 14

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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CPT 47536: Percutaneous Biliary Drainage Catheter Exchange/Conversion

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Billing Code Overview

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CPT 47536: Percutaneous Biliary Drainage Catheter Exchange/Conversion

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

CPT 47536: Percutaneous Biliary Drainage Catheter Exchange/Conversion

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Billing Code Overview

CPT 47536: Percutaneous Biliary Drainage Catheter Exchange/Conversion

Sign up for cpt 47536 policy alerts

Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What procedure and services are described by CPT code 47536?

Which commonly used modifiers are relevant for billing CPT 47536 and when are they applied?

Which specialties and sites of service are associated with performing CPT 47536?

What are common CPT codes related to 47536 and how do they differ?

Which diagnosis codes commonly support medical necessity for CPT 47536?

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What procedure and services are described by CPT code 47536?

Which commonly used modifiers are relevant for billing CPT 47536 and when are they applied?

Which specialties and sites of service are associated with performing CPT 47536?

What are common CPT codes related to 47536 and how do they differ?

Which diagnosis codes commonly support medical necessity for CPT 47536?

References