Codifying rhymes with:
edifying, modifying, solidifying, amplifying, certifying, clarifying, classifying, disqualifying, diversifying, edifying, electrifying, exemplifying, falsifying, glorifying, gratifying, horrifying, identifying, intensifying, justifying, magnifying, misidentifying, modifying, mummifying, mystifying, notifying, nullifying, personifying, purifying, qualifying, ratifying, rectifying, signifying, simplifying, solidifying, specifying, speechifying, stultifying, terrifying, testifying, unifying, verifying
Codifying sounds like:
casstevens, citibank, citibank's