In simple words: This code describes the doctor's work in creating a complex plan for radiation therapy.The plan involves carefully mapping out the treatment areas, designing special shields to protect healthy tissues, and deciding how the radiation beams will be delivered to target the tumor effectively.

This code represents complex treatment planning for radiation therapy.It involves intricate processes such as highly complex blocking, custom shielding blocks, tangential ports, special wedges or compensators, three or more separate treatment areas, rotational or special beam considerations, and combinations of therapeutic modalities.

Example 1: A patient with a tumor in the head and neck region requiring multiple treatment areas, custom shielding blocks, and complex beam arrangements., A patient with multiple tumors requiring different treatment approaches and modalities combined into a single, coordinated plan., A patient undergoing brachytherapy in conjunction with external beam radiation therapy, requiring complex coordination of treatment planning.

Documentation should include details of the tumor location and size, surrounding tissues and organs at risk, treatment goals, the rationale for the chosen treatment plan, specifics of the complex blocking and shielding used, beam arrangements and angles, treatment devices used, and any other relevant factors influencing the complexity of the planning.