It has been formulated in consultation with foreign countries and in consideration of similar code of ethics being practiced on those countries, he has told BBC Sandeshaya.
A key feature of this code of ethics is that all MPs should reveal their assets and other finances, including outside assistance and donations, to parliament, he said.
Also, an MP should refrain from voting at a debate on an issue directly connected to that particular MP.
Any citizen can lodge complaints with regard to the violation of the code of ethics and if found guilty, an MP would be banned from parliament for a certain period.
MPs should openly explain to the public regarding decisions taken by them, and withholding is permitted if deemed required for public well-being only.
MPs have a responsibility to pass the code of ethics, submitted to parliament recently, as a timely need, said Jayasuriya.
Standing orders to be amended
He went onto say that several steps have been taken by the new government to safeguard democracy and dignity of parliament, adding that a draft to amend the standing orders too, was now being prepared.
The amendments will be adopted within the next six months, he expressed hope.