Summary & Overview
CPT 47579: Unlisted Laparoscopic Procedure, Biliary Tract
CPT code 47579 designates an unlisted laparoscopic procedure of the biliary tract and is used when no specific CPT code accurately describes the service performed. Nationally, unlisted procedure codes like 47579 are important because they require additional documentation to convey clinical complexity, justify medical necessity, and support appropriate payment across diverse payers. Use of an unlisted biliary laparoscopic code can affect claims processing timelines and prior authorization workflows when payers need operative reports or itemized descriptions.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage considerations, documentation expectations, and common modifier usage patterns associated with unlisted biliary laparoscopic procedures.
Readers will learn how 47579 is applied in clinical billing contexts, what documentation is typically required by major payers, and where clarification is commonly needed for reimbursement adjudication. The article summarizes benchmarking and policy-relevant points for national stakeholders, provides clinical context for when an unlisted biliary laparoscopic code is appropriate, and identifies common operational impacts on coding and claims workflows. Data not available in the input.
Billing Code Overview
CPT code 47579 is used to report laparoscopic procedures of the biliary tract that do not have a specific CPT code. This code functions as an unlisted laparoscopic biliary procedure code for cases where the procedural details do not match any defined biliary laparoscopic codes.
Service type: Laparoscopic biliary surgery
Typical site of service: Hospital outpatient department or ambulatory surgery center, and may also be reported for inpatient laparoscopic biliary procedures when appropriate.
Clinical & Coding Specifications
Clinical Context
A 48-year-old female presents with recurrent right upper quadrant pain, intermittent jaundice, and abnormal liver function tests. Imaging with abdominal ultrasound and MRCP suggests an intrahepatic biliary stricture and stones in a segmental bile duct not amenable to standard CPT-coded laparoscopic biliary procedures. After multidisciplinary review, the patient is scheduled for a diagnostic and therapeutic laparoscopic biliary exploration to localize and address the obstructing lesion, with possible biliary duct repair or drainage.
The clinical workflow includes preoperative evaluation with history and physical, laboratory tests including LFTs and coagulation studies, informed consent describing potential conversion to open surgery, and anesthesia evaluation. Intraoperatively, diagnostic laparoscopy of the biliary tract is performed using standard laparoscopic ports, cholangiography as indicated, and targeted interventions (stone extraction, stricture takedown, ductal repair, or placement of a bile duct stent or drain). Operative documentation must describe the specific biliary tract findings, the laparoscopic maneuvers performed, and justification for using an unlisted laparoscopic biliary procedure code 47579 when no specific CPT code applies. Postoperative care includes monitoring for bile leak, infection, and hepatic dysfunction, with imaging or ERCP reserved for persistent obstruction or complications.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 |