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CPT 77620: Invasive Hyperthermia Probe Tumor Therapy
CPT code 77620 designates an invasive hyperthermia procedure in which a probe is inserted into a body cavity or tumor to deliver therapeutic heat (up to 113°F) to treat tumors located in or adjacent to that cavity. The code captures a specialized oncologic intervention used as a primary, adjunctive, or palliative modality to damage tumor tissue via controlled thermal energy. Nationally, this code matters because it represents a resource-intensive, procedure-based cancer therapy that intersects hospital, outpatient surgical, and oncology practice settings and may have variable coverage across major payers.
Key payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and typical sites of service, a summary of common billing modifiers, and what is and is not available in the supplied input. The publication outlines benchmarking and coverage considerations at a national level, highlights documentation and coding elements tied to the procedure description, and identifies gaps where additional payer policy detail, ICD-10 linkage, and related codes are not available in the input.
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Billing Code Overview
CPT code 77620 describes a therapeutic hyperthermia procedure in which a provider inserts a probe into a body cavity or tumor and delivers controlled heat, reaching temperatures up to 113 degrees Fahrenheit, to treat tumors in close proximity to or within that cavity. This is an invasive, localized tumor ablation or cytotoxic adjunct technique performed to damage tumor tissue through elevated temperature.
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Service type: Image- or probe-guided invasive hyperthermia tumor treatment
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Typical site of service: Hospital inpatient or outpatient procedure room, ambulatory surgical center, or specialized oncology treatment suite where invasive probe placement and thermal therapy can be performed safely.