A Plan Item in VETport can be a Treatment, Diagnostics, Communication, Education or non-medical Service - So it can be a drug, non-drug, service item, diagnostic, or even an educational item.
Plan Types are Treatment, Diagnostics, Communication, Education & Non-Medical Service and these types are further sub divided into Categories and sub-categories. Plan Types are the only fixed things in VETport. The categories, sub-categories and plan names can be altered, new ones can be created, and others can be inactivated so they do not show up in normal usage.
Here is where you can edit all the properties of a plan item and even create one
From here you can search plan items as per species-wise
Plan Types are Treatment, Diagnostics, Communication, Education & Non-Medical Service and these types are further subdivided into Categories and sub-categories as shown on the first screenshot
The plan items displayed above can be edited and their properties modified.