To reduce to a code: codify laws. (verb-transitive)
To arrange or systematize.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "codify" in a sentence
"Mr. President: A word to the wise, even if it becomes clear you've gone back on your staff's statements that your Stupak-evil Order doesn't do anything more than "codify" existing law."
"Why was the Executive Order at all necessary if all it did was "codify" existing law?"
"Sure, I'll support you when you tell me it's a good idea to (only) "codify" in an Executive Order something, (The Hyde Amendment), which, by any measure, has been horrible for women for over two generations (The Speaker and her pro-choice Member leaders)."