Definition. “Unit of service” means one meal delivered to the participant's home, including the cost of the food, food preparation, and delivery. The meal shall be intended for consumption at home. This service may not constitute the participant's full nutritional regimen of three meals per day. Each meal shall: Be nutritionally adequate for the participant's age based on the Recommended Dietary Allowance (RDA) or Dietary Reference Intake (DRI), as established by the Food and Nutrition Board of the National Research Council; and Meet either of the following: At least one-third of the RDA or DRI; or Therapeutic or restrictive diet requirements ordered by the participant's physician, dietitian, or nutritionist, including any ordered nutritional supplements. The ICS Program's coverage under this regulation may not: Result, when combined with home-delivered meals received under Title III of the Older Americans Act, in public funding for the participant's full daily nutritional regimen of three meals; or Supplant payment for home-delivered meals under Title III.