All the billing codes (CPT/HCPCS/ICD) are inbuilt in drchrono. Custom codes are the ones which are created manually. Custom codes are non-billable codes. You can easily search these codes by following the steps outlined below:
1. Hover over Billing and select "Code Search"
2. This screen will have all the list of codes and you can filter by code types, search by specific code.
3. It also allows you to add any valid codes which are not in our database by clicking on "+New" icon on the right and select the code type. These codes can be updated in the billing screen and bill out to the insurances.