Looking for the Keycode to my Ford Stereo?

Hi,
I am looking for help getting the Keycode to my Ford Focus stereo.

Changed the bulb on the passenger side headlight and had to remove the battery and the housing to get at it and now I need to reprogram my stereo and I do not have the Keycode.

The Stereo is a 6000NE made by Visteon
Serial Number M437526