Budget Worksheet with Itemized Expenses

Hello!  I'm trying to create a Budget Workbook where the first sheet is a summary of all income and expenses that roll up from separate sheets that itemize each expense item.  I've applied codes to each type of expense, but I can't figure out how to: 1. look up the code for each expense type, and 2. total them together on the summary sheet.  I've tried VLookup, but haven't had any success with that.  I'd like to share the workbook I'm working in, but can't seem to attach it here.

Thanks!