If you use match by GPI or GPI override NDCs will be highlighted in blue where the NDC changed to give you more savings. Meaning the we found a NDC equivalent with the greatest savings

 If you click on these NDC you will be given options 

When you select an NDC you will be taken to this screen

The top table will give you some information about what happened to your NDC: The drug description, the current NDC and manufacturer, and your original NDC and manufacturer. The table below that shows how much savings you received with this new NDC. 

The example in the picture shows that the item was originally $13.31, and the equivalent NDC we found is only $7.38, saving you 44.55% of the initial price 

Hitting "Cancel" will keep the NDC as shown in your cart, you should select this if you like the savings and dont mind the NDC change. 

Hitting "Revert item to Primary" will move the item back to your Primary's cart, you should do this if you need more items so you can stay complient with your primary 

The big blue button will revert the item back to its original NDC, but we will find the greatest savings for that NDC. This option allows you to save as much as possible when you need a specific NDC