The new code, which takes effect immediately, continues to set out what is acceptable to broadcast and covers such areas as the protection of under-18s, fairness, privacy and commercial references in programmes.
The main changes to the code involve clarifications regarding audience competitions and voting, and the broadcast of sexual material.
The new rules do not change current regulations, but offer a clarification to "help minimise future compliance failures".
Regarding rules concerning the broadcast of sexual material on TV, there is fresh guidance to benefit broadcasters and audiences.
Meanwhile, Ofcom said it is conducting research on rules relating to offensive language and the 9pm watershed, with possible changes in 2010.
Ofcom has also published new internal procedures for the handling of standards and licence-related cases, fairness and privacy complaints, and statutory sanctions in broadcasting.