Every subdivision of the IPC is indicated by a symbol and has a title . Each section is subdivided into classes which symbols consist of the section symbol followed by a two-digit number.
Subgroups form subdivisions under the main groups.
The title of a subgroup is preceeded by one or more dots indicating the hierarchical position of that subgroup, i.e., indicating that each subgroup forms a subdivision of the nearest group above it having one dot less. For obtaining more detailed information on the subdivisions of the IPC, it is recommended to review the Guide to the IPC . The main purpose of the Guide is to explain the layout and use of the IPC symbols, as well as the principles and rules of the IPC and its interpretation. In the Internet presentation of the IPC, the index page includes a list of eight sections designated by letters A to H with the title of each section. After clicking on the relevant section, the contents of the section appear containing all classes and subclasses to which the section is subdivided.