Summary & Overview
HCPCS G0339: Image-Guided Robotic Linac Stereotactic Radiosurgery
HCPCS Level II code G0339 designates image-guided, robotic linear accelerator-based stereotactic radiosurgery (SRS) for a complete course delivered in a single session or as the first session of a fractionated course. This code captures high-precision, ablative radiation therapy typically used for intracranial and select extracranial targets where a single-session or staged SRS approach is clinically indicated. Nationally, accurate coding for G0339 matters for consistent reporting of advanced radiation services, reimbursement alignment, and monitoring of SRS utilization patterns.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for SRS using image-guided robotic linac platforms, typical sites of service, and what the code represents in billing workflows. The publication summarizes available benchmarks and payer coverage considerations, highlights policy updates relevant to advanced radiation procedures, and outlines common billing modifiers and documentation elements practitioners reference when reporting G0339. Where input data is missing, the text notes that specific details are not available in the input.
Billing Code Overview
HCPCS Level II code G0339 describes image-guided robotic linear accelerator-based stereotactic radiosurgery, billed for a complete course of therapy in one session or the first session of fractionated treatment. The service type is stereotactic radiosurgery using a robotic linear accelerator with image guidance. The typical site of service is an outpatient radiation oncology facility or hospital outpatient department where stereotactic radiosurgery is delivered in a single-session or as the initial session of a planned fractionated regimen.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with a solitary intracranial metastasis from non-small cell lung cancer presents for image-guided robotic linear accelerator-based stereotactic radiosurgery. The patient undergoes pre-treatment consultation with radiation oncology, including review of diagnostic MRI with contrast and multidisciplinary confirmation that stereotactic radiosurgery is appropriate. Immobilization and treatment planning follow: high-resolution planning MRI fused with planning CT, target delineation, and dose planning for a single-session ablative treatment. On the day of service the patient is positioned in a dedicated stereotactic immobilization device, image guidance is performed with cone-beam CT and robotic localization, and a single-session stereotactic radiosurgery course is delivered using a linear accelerator with robotic couch capabilities. Post-treatment verification images are obtained and the patient is discharged with follow-up instructions.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician interpretation/planning component separate from facility/device services. |
52 | Reduced services |