As you navigate the SIC Drilldown, simply select the most appropriate title at each level to find your code. 3rd Parties such as Dun&Bradstreet have developed the 8 digit SIC system to further delineate related industry titles. A Division breaks down into Major Industry Groups, and Industry Groups Break Down into Industry Titles. The SIC Drilldown is broken out by the following categories: Division, Major Industry Group, Industry Group, Industry Title.Įach Code fits into one of 10 SIC Divisions. Using the SIC Code Drilldown List to Identify Your Code: You should be looking for the code that best describes what your business does. It is a much more general and less specific classification system than the newer NAICS Codes, especially at the official, 4-digit level. SIC Codes are based on Primary Business Activities.