1. The Code of Hammurabi is not the earliest law code to have been discovered in the region, it is simply the most famous.  The Code of Hammurabi has nothing to do with Mosaic Law.  If you believe that Mosiac Law has something to do with the Code of Hammurabi, despite all evidence to the contrary, go muck up that article.
2. There are other law codes that have been found that were independently created of the Code of Hammurabi, such as the laws that appear in the torah, or those in China.
3. Additionally, no one like Moses ever lived in Egypt, nor did Hewbrew slaves.  A story similar to that of Moses had been floating around the Middle East long before there was a Hebrew people.  Furthermore, it has nothing to do with the argument (that being that the Code of Hammurabi has nothing to do with Mosaic Law.  Bringing it up is a deliberate attempt to obfuscate the topic. 
4. Finally, you have yet to address any of my clearly defined points.