sign, symptom, or diagnosis, it is appropriate to assign both the V code and the code describing the reason for the non-routine test. 18
The difference is in the types of non -nutritive sweeteners used. Diet Coke has aspartame while Coke Zero has a mix of aspartame and acesulfame potassium. The beverages have different levels of sweetness and off tastes (I.e. high levels of aspartame have a metallic taste) as a result.
Diet Coke and most other diet soft drinks do not contain sugar. Sugar is a type of carbohydrate, and carbohydrate is the nutrient that has the most effect on blood glucose. Most diet soft drinks are sweetened with non-nutritive or non-caloric sweeteners such as aspartame, acesulfame-K and sucralose. These sweeteners contain no calories or carbohydrate.