Summary & Overview
HCPCS S0400: Extracorporeal Shock Wave Lithotripsy Global Fee
HCPCS Level II code S0400 denotes the global fee for extracorporeal shock wave lithotripsy (ESWL) used to fragment kidney stones. This code captures the bundled professional and technical components associated with a single ESWL treatment episode and is relevant for hospitals, ambulatory surgical centers, and outpatient urology practices. Nationally, ESWL remains a widely utilized, noninvasive option for renal calculi, and accurate coding of global fees affects provider billing, payer claims adjudication, and patient cost-sharing.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for ESWL, typical sites of service, and the scope of charges represented by a global fee code. The publication outlines common modifiers associated with procedural billing and highlights how payers commonly approach global service payments, bundling, and claim adjudication practices. It also provides benchmarking information where available and notes when specific data elements are not provided.
The content is intended for billing professionals, revenue cycle managers, and clinicians involved in urology services who need a concise reference to the clinical and billing implications of HCPCS Level II code S0400 for ESWL treatment of kidney stones.
Billing Code Overview
HCPCS Level II code S0400 represents the global fee for extracorporeal shock wave lithotripsy treatment of kidney stone(s). This service is procedural in nature and covers the overall charge for performing extracorporeal shock wave lithotripsy (ESWL) for renal calculi.
Typical site of service: Hospital outpatient department or ambulatory surgical center, where ESWL is commonly performed as an outpatient procedure.
Clinical & Coding Specifications
Clinical Context
A 48-year-old adult presents to a urology clinic with acute flank pain and hematuria. Imaging with non-contrast CT confirms a 9 mm radiopaque calculus in the renal pelvis causing obstructive symptoms without active infection. Conservative measures fail and the urologist schedules extracorporeal shock wave lithotripsy (ESWL). The patient arrives on the day of procedure at an ambulatory surgical center or hospital outpatient department. Pre-procedure evaluation includes consent, review of anticoagulation status, and brief anesthesia assessment; ESWL is usually performed with monitored anesthesia care or light sedation. The procedure uses a lithotripter to deliver focused shock waves to fragment the renal stone under fluoroscopic or ultrasound guidance. Post-procedure monitoring includes vital signs, pain control, and discharge instructions about straining urine, hydration, and signs of complications (infection, uncontrolled pain, or significant bleeding). Follow-up imaging is scheduled in 4–6 weeks to assess stone clearance and determine if repeat ESWL or alternative intervention (ureteroscopy or percutaneous nephrolithotomy) is required.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | When work, time, or technical difficulty for ESWL is substantially greater than typical and well-documented |
23 |