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Description
Identifies Radiation Treatment Modality--Phase I, II, and III, effective 01/01/2018, identify the radiation modality administered during the first, second, and third phase, respectively, of radiation treatment delivered during the first course of treatment. This data item is required for CoC-accredited facilities as of 01/01/2018.Rationale

Radiation modality reflects whether a treatment was external beam, brachytherapy, a radioisotope as well as their major subtypes, or a combination of modalities. This data item should be used to indicate the radiation modality administered during the first phase of radiation.
Historically, the previously-named Regional Treatment Modality data item [1570] utilized codes that were not mutually exclusive. Rather, it included codes describing a mix of modalities, treatment planning techniques, and delivery techniques that are commonly utilized by radiation oncologists. However, every phase of radiation treatment will include a specified modality, planning technique, and delivery technique. The goal of the 2018 implementation of separate phase-specific data items for the recording of radiation modality and radiation treatment planning techniques is to clarify this information and implement mutually exclusive categories. A separate data item for delivery technique has not been implemented because this information is not consistently reported in end treatment summaries.

Refer to the current STandards for Oncology Registry Entry (STORE) Manualand the CTR Guide to Coding Radiation Therapy Treatment in the STORE (see 2024 STORE Manual, Appendix M)

Coding Instructions

1. Assign code 13 Radioisotopes, NOS for Radioembolization procedures, e.g., intravascular yttrium-90 or lutetium-177