CPT code 77605 describes deep therapeutic hyperthermia in which tissue deeper than 4 cm is exposed to temperatures up to 113°F. The code captures a specialized oncologic or therapeutic procedure used to target deep-seated lesions that may benefit from controlled heating. Nationally, this code is significant because it represents a niche, resource-intensive service that typically occurs in hospital outpatient departments, ambulatory surgical centers, and specialized oncology facilities.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for hyperthermia, common billing and coding considerations tied to the procedure description, and what types of service settings typically report this code. The publication also outlines expected benchmarks and policy-relevant issues readers should consider for national coverage and reimbursement discussions.

This summary provides clinicians, billing professionals, and policy analysts with the essential facts about CPT code 77605, the clinical service it represents, and the payer landscape relevant to national-level discussions. Data not available in the input will be noted where specific details are missing in subsequent sections.