?:definition
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A coded value specifying a subdivision within a larger category of activities. EXAMPLE(S): chemotherapy, radiotherapy, hormonal therapy, alternative therapy In the case where categoryCode = \'anti-cancer treatment\', subcategoryCode may = \'radiotherapy\', and nameCode may = \'external beam radiotherapy\'. If categoryCode = \'Intervention\', subcategoryCode may = \'Drug\' (including placebo), \'Device\' (including sham), \'Biological/Vaccine\', \'Procedure/Surgery\', \'Radiation\', \'Behavioral\' (e.g., Psychotherapy, Lifestyle Counseling), \'Genetic\' (including gene transfer, stem cell and recombinant DNA), Dietary Supplement. OTHER NAME(S): NOTE(S): Theoretically speaking, the categoryCode should be derivable from the subcategoryCode, however if there may only be a category and not a subcategory, then both attributes must be present in the model.
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