NCCER module numbers are divided into three parts:

  • A two-digit prefix (craft identifier)
  • Unique 3-digit module sequence number
  • A hyphen followed by the last 2 digits of the year the curriculum was revised

For example, 29102-15 =

  • 29: Welding
  • 102: unique module number
  • 15: year the craft was last revised

This structure allows users to easily track training histories and revisions from one edition to the next.