You have the ability to ‘SALT’ (same as last time) charges on a purchase. This means that clicking the SALT button on a purchase will auto-add the same billing codes from the previous purchase to the current purchase. 

Here's how to SALT charges on a purchase: 

From a patient treatment purchase, click the SALT button. Billing codes from the patients most recent purchase prior to this one will populate. 

(If the most recent purchase has no codes added, then no codes will add to this purchase.)