DICOM PS3.3 2021e - Information Object Definitions
A.34.12.4.8 Acquisition Context Module

For Routine Scalp EEG SOP Instances acquired using photic stimulation techniques the Defined TID for Acquisition Context Sequence (0040,0555) is TID 3480 “Neurophysiologic Stimulation Acquisition Context”.

DICOM PS3.3 2021e - Information Object Definitions