Summary & Overview
CPT 61715: MRI-Guided Stereotactic Focused Ultrasound Brain Ablation
Headline: CPT code 61715 defines MRI-guided, stereotactic focused ultrasound ablation of brain lesions, an image‑guided neurosurgical therapy that preserves surrounding tissue.
Lead: CPT code 61715 represents a minimally invasive, MRI-guided procedure that uses high‑frequency ultrasound to thermally ablate damaged or diseased brain tissue with stereotactic precision. The technique matters nationally as an evolving option for selected neurological conditions where targeted lesion ablation can improve symptoms while avoiding open surgery.
Why it matters: The procedure aligns with advances in image‑guided neurosurgery and noninvasive therapeutic technologies. Payers are increasingly defining coverage criteria and payment pathways for high‑intensity image‑guided therapies; Medicare and major national commercial plans are central to access and reimbursement policy discussions.
Payers covered: This overview addresses major national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
What readers will learn: The publication provides clinical context for the procedure, outlines service and site‑of‑care implications, and summarizes typical payer coverage considerations and benchmarking topics. Readers will find a concise description of the service represented by CPT code 61715, the expected clinical settings, and the policy and billing themes that influence access and payment for MRI‑guided focused ultrasound brain ablation.
Billing Code Overview
CPT code 61715 describes a procedure using magnetic resonance imaging (MRI) guidance to deliver focused, high-frequency ultrasound energy to create heat and ablate (destroy) targeted brain tissue. The technique may use a stereotactic frame with markers placed on the head to enable precise targeting of a lesion while preserving surrounding healthy tissue.
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Service type: Image-guided focused ultrasound ablation of brain tissue (stereotactic MRI-guided therapeutic ultrasound)
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Typical site of service: Hospital outpatient department, ambulatory surgical center, or specialized inpatient neurosurgical unit depending on clinical need and patient monitoring requirements.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 60-year-old with medication-refractory essential tremor or a small, well-circumscribed, symptomatic thalamic or subcortical lesion deemed appropriate for noninvasive thermal ablation. The clinical workflow begins with neurologic and neurosurgical evaluation confirming failed medical therapy or high surgical risk for open procedures. Preprocedural evaluation includes MRI brain with contrast, functional imaging as indicated, and multidisciplinary review. On the day of service the patient is positioned within the MRI scanner; a stereotactic head frame or scalp markers are applied when required for targeting. The team performs MR thermometry-guided focused ultrasound sonications, incrementally raising focal temperatures to create lesions while continuously monitoring neurologic status and MRI for target accuracy and collateral heating. The procedure may be performed under moderate sedation or general anesthesia depending on patient tolerance and team preference. Postprocedure MRI confirms lesion placement, and the patient is observed for neurologic changes prior to discharge or short inpatient stay. Typical site of service is an inpatient or outpatient hospital-based MRI interventional suite or ambulatory surgical center equipped for MR-guided focused ultrasound.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when only the physician interpretation or professional component of imaging or technical services is billed separately. |