Summary & Overview
HCPCS S9034: Extracorporeal Shockwave Lithotripsy for Gallstones
HCPCS Level II code S9034 represents extracorporeal shockwave lithotripsy (ESWL) for gallstones, a non-invasive procedural option to fragment gallstones for subsequent passage or removal. Nationally, the code is relevant for payers and providers managing procedural authorization, site-of-service designation, and claims processing for patients with symptomatic cholelithiasis or complex biliary disease where ESWL is considered. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare.
Readers will learn what S9034 denotes clinically and operationally, typical sites of service where the procedure is performed, and which major payers recognize the code. The publication provides benchmarks for coverage and claims handling, summarizes policy and coding considerations tied to combined endoscopic procedures (noting that 43265 is used when ERCP is performed), and highlights billing implications for facilities and professional billing. Clinical context around use of lithotripsy for gallstones and payer-relevant coding distinctions are covered to support accurate claims submission and administrative planning. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code S9034 describes extracorporeal shockwave lithotripsy for gall stones. The service involves using externally applied shockwaves to fragment gallstones to facilitate passage or removal. If the procedure is performed in conjunction with endoscopic retrograde cholangiopancreatography, use 43265 instead.
Service type: Procedural, non-invasive lithotripsy
Typical site of service: Hospital outpatient department or ambulatory surgical center, with possible performance in specialized procedure suites depending on institutional setup.
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with symptomatic cholelithiasis presents with intermittent right upper quadrant pain, nausea after fatty meals, and imaging-confirmed gallstones without acute cholecystitis. Conservative measures and medical dissolution therapy were ineffective or contraindicated. The multidisciplinary care team (gastroenterologist and interventional radiologist or urologist with experience in extracorporeal lithotripsy) evaluates the patient for extracorporeal shockwave lithotripsy (ESWL) targeting gallstones. Pre-procedure assessment includes history, focused abdominal exam, coagulation studies, and cross-sectional or ultrasound imaging to localize stone burden and determine stone composition and size. The procedure is typically performed in an outpatient surgical suite or hospital procedural unit under monitored anesthesia care or general anesthesia depending on patient factors. Fluoroscopic or ultrasound guidance is used to target the stones while shock waves are delivered extracorporeally to fragment stones. If endoscopic retrograde cholangiopancreatography (ERCP) is required concurrently for bile duct clearance, the ERCP is reported separately (see CPT guidance such as 43265 when performed with ERCP per payer instructions). Post-procedure, patients are observed for pain control, signs of biliary obstruction or infection, and given instructions for follow-up imaging and possible endoscopic extraction of residual fragments. Documentation includes indication, stone location and size, imaging guidance modality, anesthesia type, total number of shockwaves, energy settings, any concurrent ERCP or biliary interventions, and post-procedure condition.
Coding Specifications
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