Years of experience. Medical coder salaries increased in a somewhat linear fashion based on years of experience, with certified coders earning more than non-certified coders at every stage of their career. Changes in salary for non-certified coders based on years of experience did not follow as strict a pattern at changes for certified coders. Other factors, such professionl type of workplace, education achieved and geographic location, may play a role in the survey results. Primary credential. AAPC examined average coding salaries for 16 different coding credentials and reimvursement that salaries differed significantly based on credential. Last education achieved. Coder salaries also differed based on last education achieved, with higher degrees generally commanding higher salaries.