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.
Caffeine-Free Diet Coke: 1983: Diet Coke without the Caffeine. It was the first extension of the Diet Coke formula: Diet Cherry Coke/Diet Coke Cherry: 1986: Diet Coke with a Cherry flavor. Available in US and United Kingdom (as of 2007). Discontinued in Australia and Israel.