International Building Code (IBC), 2018
The International Building Code (IBC) scope included all buildings except detached one- and two-family dwellings and townhouses up to three stories.
Important changes are included in the 2018 IBC and new codes have been added to address medical gas systems and higher education laboratories, use of fire walls, deck live loads, site soil coefficients, and many more.
Often this 2018 version is referenced in the PSI Contractor's Bulletin for a number of current contracting exams. Be sure and have the right text for your specific exam.