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CPT 77261: Radiation Treatment Planning, Initial
CPT code 77261 denotes initial clinical treatment planning for radiation therapy in which the provider establishes beam entry points, port locations, shielding block design, and therapy modes (single or combined). This code is used nationally to document and bill the initial, basic complexity planning encounter that guides delivery of external-beam or related radiation treatments for malignancies. It is relevant to providers in radiation oncology and hospital departments and has implications for coding accuracy, care coordination, and reimbursement workflows.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical role of 77261, how it differs from intermediate and complex planning codes (77262 and 77263), common sites of service, and the types of clinical scenarios where initial planning is appropriate. The publication also summarizes benchmark considerations and payer coverage patterns, highlights coding nuances affecting documentation, and identifies where policy or billing questions commonly arise. This material is designed for clinical coders, radiation oncology clinicians, revenue cycle staff, and policy analysts seeking a concise national view of how CPT code 77261 is applied and interpreted.
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Billing Code Overview
CPT code 77261 describes the development of a radiotherapy treatment plan in which the provider determines the beam entry points (ports), number and placement of ports, design and placement of shielding blocks, and selection of therapy modes (for example, arc therapy or brachytherapy). The service may involve a single mode or a combination of modes and reflects formulation of a localized radiation treatment approach tailored to the patient’s tumor and anatomy.
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Service type: Clinical treatment planning for radiation therapy (initial planning, basic complexity)
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Typical site of service: Radiation oncology clinic or hospital-based radiation therapy department
National Reimbursement Benchmarks
Nationally, Medicare’s mean rate of $71.8 for CPT 77261 sits below the average commercial aggregator BUCA’s mean of $99.7, creating a headline gap of $27.9 between federal and commercial averages. This gap indicates that commercially negotiated reimbursements are materially higher than Medicare for this service; median comparisons are available for many commercial plans but Medicare’s central tendency is represented by its $71 median, which aligns closely with its mean.
Dispersion varies across payers: Blue Cross Blue Shield has a P75–P25 spread of $39.3, UnitedHealth Group $57.8, Cigna $66.3, Aetna $33.0, and BUCA $46.6; Medicare’s interquartile range is tight at $4. Overall, Cigna exhibits the widest interquartile spread at $66.3, suggesting greater variability in commercial contract rates, while Medicare is the tightest at $4, indicating highly consistent locality-based rates.