special dietary use
(3) For purposes of paragraph (1) and of section 343(j) of this title insofar as that section is applicable to food to which this section applies, the term “special dietary use” as applied to food used by man means a particular use for which a food purports or is represented to be used, including but not limited to the following: (A) Supplying a special dietary need that exists by reason of a physical, physiological, pathological, or other condition, including but not limited to the condition of disease, convalescence, pregnancy, lactation, infancy, allergic hypersensitivity to food, underweight, overweight, or the need to control the intake of sodium. (B) Supplying a vitamin, mineral, or other ingredient for use by man to supplement his diet by increasing the total dietary intake. (C) Supplying a special dietary need by reason of being a food for use as the sole item of the diet.
21 USC § 350(c)(3)
None identified, default scope is assumed to be the parent (subchapter IV) of this section.