Summary & Overview

CPT 60661: Percutaneous Radiofrequency Ablation of Additional Thyroid Lobe Nodules

Headline: CPT code 60661: Add-on percutaneous radiofrequency ablation for additional thyroid lobe nodules

Lead: CPT code 60661 designates an add-on service for percutaneous radiofrequency ablation (RFA) used to ablate one or more thyroid nodules on an additional lobe after treatment of the first lobe or the isthmus; imaging guidance is included. The code matters nationally as minimally invasive RFA expands as an alternative to surgery for symptomatic or enlarging benign thyroid nodules, affecting utilization, payer coverage, and facility planning.

What the code represents and why it matters: CPT code 60661 captures a discrete, billable increment when a provider performs RFA on an additional thyroid lobe during the same encounter. Accurate use of this add-on code supports appropriate payment for extended procedural work and imaging time and clarifies claims for complex bilateral or staged thyroid nodule treatments.

Key payers covered: Analysis typically examines national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare to reflect common commercial and federal coverage patterns.

What readers will learn: The publication provides benchmarks for utilization and reimbursement where available, summarizes payer coverage tendencies and coding guidance, and situates CPT code 60661 within the clinical context of percutaneous, image-guided thyroid nodule ablation. It also outlines typical sites of service and common billing considerations. Data not available in the input will be explicitly noted where relevant.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 60661thyroid nodule ablationradiofrequency ablationpercutaneous proceduresimage-guided interventionadd-on codeendocrine proceduresambulatory surgery

Billing Code Overview

CPT code 60661 describes an add-on radiofrequency ablation (RFA) service for treating one or more thyroid nodules on an additional lobe after treatment of the first lobe or the isthmus. The procedure is performed percutaneously (through the skin) and includes imaging guidance as part of the service.

Service Type: Percutaneous thyroid nodule radiofrequency ablation — add-on service

Typical Site of Service: Outpatient procedural settings or ambulatory surgical centers where percutaneous, image-guided thyroid interventions are performed.

Clinical & Coding Specifications

Clinical Context

A typical patient is a 45–65 year-old adult presenting with one or more symptomatic or growing benign thyroid nodules causing cosmetic concerns, local compressive symptoms, or persistent cystic nodules after aspiration. The patient has undergone preprocedural evaluation including thyroid ultrasound mapping, fine-needle aspiration when indicated, baseline labs (thyroid-stimulating hormone), and informed consent discussing thermal ablation risks. During a single session a treating interventional radiologist, endocrinologist with procedural privileges, or otolaryngologist performs percutaneous radiofrequency ablation (RFA) of nodules in one thyroid lobe or the isthmus under real-time ultrasound guidance. If additional nodules are present in the contralateral lobe or an additional ipsilateral lobe after treatment of the first lobe or isthmus, 60661 is reported as the add-on code for ablation of one or more nodules on that additional lobe. Imaging guidance is included in the code. Typical workflow: preprocedure ultrasound localization and marking, conscious sedation or local anesthesia administration, ultrasound-guided needle placement, thermal ablation of the targeted nodules, immediate postablation ultrasound assessment for complication (hematoma, voice changes), and short postprocedure observation with discharge instructions and follow-up ultrasound at 1–6 months.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier

Taxonomy Code	Specialty	Notes
`2085R0200X`	Interventional Radiology	Common specialty performing percutaneous RFA with ultrasound guidance.
`207P00000X`	Otolaryngology (ENT)	Head and neck surgeons performing image-guided thyroid procedures.
`207L00000X`	Endocrinology	Endocrinologists may perform or co-manage thermal ablation in some practices.
`261QM0800X`	General Surgery	Surgeons with endocrine/thyroid focus who perform percutaneous interventions.
`363LA2200X`	Diagnostic Radiology	Radiologists with procedural privileges performing ultrasound-guided ablations.

ICD-10 Code	Description	Clinical Relevance
`E04.1`	Nontoxic single thyroid nodule	Common benign indication for percutaneous ablation to reduce nodule size/symptoms.
`E04.2`	Nontoxic multinodular goiter	Multiple nodules may require staged or multiple-lobe ablation; `60661` covers additional lobe treatment.
`E04.0`	Nontoxic diffuse goiter	Diffuse enlargement may coexist; targeted nodules within a diffusely enlarged gland can be ablated.
`E07.9`	Disorder of thyroid, unspecified	Used when specific benign etiology not otherwise specified but ablation is clinically indicated.
`D34`	Benign neoplasm of thyroid gland	Histologically benign nodules that are symptomatic or growing are appropriate targets for RFA.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`60659`	Percutaneous ablation of thyroid nodule; single lobe or isthmus (includes imaging guidance)	Primary procedure code for the initial ablation of one lobe or the isthmus; `60661` is reported as an add-on when an additional lobe is treated after `60659`.
`76942`	Ultrasonic guidance for needle placement (e.g., biopsy, aspiration, injection)	Often reported when separate ultrasound guidance for needle placement is billed by a different provider; note that `60661` includes imaging guidance when billed as part of the ablation by the performing provider.
`49440`	Image-guided percutaneous ablation of soft tissue tumor (e.g., liver, kidney) — example image-guided ablation code	Example related image-guidance ablation codes for cross-reference; used when coding other ablation sites in the same facility or for coder comparison of technique and documentation requirements.
`76937`	Ultrasound guidance for vascular access device placement, imaging supervision and interpretation	May be used in the same encounter if vascular access for sedation/monitoring requires separate guidance services.
`99024`	Postoperative follow-up visit global period, normally included	Postprocedure follow-up care is typically bundled in the global period of ablation codes; additional visits only billed when outside global period or for unrelated services.

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