If you know anything about CPT-4 procedure codes, then this application might just pique your interest.
This application uses iSilo to hyperlink to important medical documents. The hyperlinks are used to give you access to up-to-date CTP-4 procedure codes and ICD-9-CM diagnoses. These codes are used for primary care. Another useful feature is the common terms that are listed with their abbreviations.
This application gives you speed-of-light results when you are trying to locate codes.