In table DF0, what does the value of 0 denote?

In ICD-10-PCS coding, table DF0 is used for radiation therapy procedures, specifically focusing on the type of energy used. The value of 0 within this context indicates "Beam radiation." This refers to the application of high-energy radiation beams directed at a tumor or area to kill cancer cells or inhibit their growth. This categorization is crucial in coding for radiation therapy because it differentiates between various forms of treatment, allowing for proper documentation and statistical analysis of cancer therapies.

By understanding that the code reflects a specific method of delivering radiation treatment, coders can ensure accurate coding which is fundamental in healthcare billing, treatment analysis, and research. The other options pertain to different modalities or general types of treatment that do not specifically align with the definition associated with the value of 0 in table DF0.