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.