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.
Here's what our tasters thought of the two sugar-free soft drinks: Diet Coke: Tastes fake right away.. Much fresher brighter, crisper.. Has the wonderful flavors of Diet Coke's artificial sweeteners.. Coca-Cola Zero: Has more of a sharply sweet aftertaste I associate with diet sodas..