Did your code fix a problem? If you can show a time or money savings from what you created that is very helpful. Was your work less buggy than others, did you do something beyond the ordinary business application CRUD stuff? My own resume uses a lot of numeric data to support my achievements. Managers, especially MBA types, love things that are quantifiable. I talk about processes where I reduced the time from over 24 hours to less than an hour for instance (wonderful what replacing a cursor can do for performance as well as not doing unneeded processing). I mention how using my database application reduced the amount of time to respond to a maintenance issue (we had a very specific contractual time to respond or start losing money, my application brought the issues up more quickly so they could be assigned and worked on in a more timely manner.) Did the software sell to other becoming a profit center for your company. Did you fix a serious, difficult to find bug that was costing the company money?
I have an achievements secion on my resume and I pick and choose what to put on it depending on the nature of the job I'm applying for (after all I have over 30 years of achievements to pick from). I find it is more effective to have some specific achievements that relate to business needs (saved time, saved money, met deadlines stayed within budget, etc.) than general responsibites ("I wrote SSIS pacakages" just doesn't compare to "I improved performance of imports by 312%"). It also is far more effective than the utterly useless Objectives section which rarely gets you an interview but which has often been used to filter you out from an interview.