Codex Justinianus

The Codex Justinianus (Latin for "The Code of Justinian") is one part of the Corpus Juris Civilis, the codification of Roman law ordered by Justinian I early in the 6th century AD. Two other units, the Digest and the Institutes, were created during his reign. The fourth part, the Novellae Constitutiones (New Constitutions, or Novels), was compiled unofficially after his death but is now thought of as part of the Corpus Juris Civilis.