Summary & Overview
HCPCS G8878: Sentinel Lymph Node Biopsy Procedure Performed
HCPCS Level II code G8878 denotes a sentinel lymph node biopsy procedure performed, a targeted surgical technique used to stage cancers by sampling the first draining lymph node(s). Nationally, sentinel lymph node biopsy is a cornerstone of oncologic staging for malignancies such as breast cancer and cutaneous melanoma; accurate coding of this procedure affects case classification, downstream treatment planning, and quality measurement. Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise overview of what G8878 represents clinically and operationally, plus guidance on payer coverage patterns and common billing considerations. The publication summarizes benchmarks and policy context relevant to billing and reimbursement, highlights where coding clarity matters for surgical and outpatient settings, and outlines clinical context that influences utilization. Data elements not provided in the input are noted as unavailable. The content is intended for a national audience of coding professionals, revenue cycle managers, and clinical leaders seeking a compact reference for this HCPCS Level II code.
Billing Code Overview
HCPCS Level II code G8878 represents a sentinel lymph node biopsy procedure performed. This procedure involves identifying and surgically removing one or more sentinel lymph nodes to assess for metastatic disease and guide further treatment.
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Service type: Surgical procedure
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Typical site of service: Hospital outpatient department or ambulatory surgery center
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Clinical & Coding Specifications
Clinical Context
A 58-year-old female with a newly diagnosed invasive breast carcinoma is referred for surgical management. Preoperative imaging shows a clinically node-negative axilla. On the day of surgery, the surgical oncology team performs a lumpectomy with sentinel lymph node biopsy to stage the axilla and guide adjuvant therapy. The workflow includes preoperative localization with lymphoscintigraphy or intraoperative injection of blue dye and/or radiocolloid, intraoperative identification of sentinel nodes using a gamma probe and visualization of blue-stained nodes, excision of sentinel lymph nodes, submission of nodes for frozen section or permanent histopathology, and documentation of node count and mapping technique in the operative note. Typical site of service: hospital operating room or outpatient ambulatory surgical center. Service type: operative procedure (sentinel lymph node biopsy) billed under HCPCS Level II code G8878 to indicate the sentinel lymph node biopsy procedure performed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required to perform the sentinel lymph node biopsy is substantially greater than typically required. |
23 |