The type of treatment delivered as part of a RADIOTHERAPY PRESCRIPTION.

Where the treatment is delivered as part of a Cancer Treatment Period, RADIOTHERAPY TREATMENT MODALITY is equivalent to CANCER TREATMENT MODALITY National Codes 'Teletherapy' or 'Brachytherapy'. 

National Codes:

This attribute is also known by these names:

Context	Alias
plural	RADIOTHERAPY TREATMENT MODALITIES