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Official Description

Teletherapy, isodose plan (whether hand or computer calculated); simple (1 or 2 parallel opposed unmodified ports directed to a single area of interest)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 77305 refers to the process of creating a teletherapy isodose plan, which is a critical step in the administration of radiation therapy for cancer patients. This procedure involves the careful planning of the distribution of radiation doses to ensure that the targeted area receives the appropriate amount of radiation while minimizing exposure to surrounding healthy tissues. The term "isodose" refers to lines that represent areas receiving the same dose of radiation, which helps in visualizing how the radiation will be delivered. In this context, the planning can be performed either by hand or through computer calculations. The procedure is classified as simple, indicating that it typically involves one or two parallel opposed unmodified ports directed towards a single area of interest. This means that the radiation beams are aligned in a straightforward manner, focusing on a specific treatment area without the need for complex modifications or blocking techniques. The effective planning of these radiation beams is essential for optimizing treatment outcomes and ensuring patient safety during the course of therapy.

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