Source : Webster's Revised Unabridged Dictionary (1913)

Codify \Co"di*fy\ (? or ?; 277), v. t. [imp. & p. p. {Codified};
   p. pr. & vb. n. {Codifying}.] [Code + -fy: cf. F. codifier.]
   To reduce to a code, as laws.

Source : WordNet®

codify
     v : organize into a code or system, such as a body of law;
         "Hamurabi codified the laws"
     [also: {codified}]