A Certified Professional Coder - Apprentice (CPC-A) credential is for medical coding students who have passed the Certified Professional Coder exam from the American Academy of Professional Coders (AACP). As an apprentice, you take additional continuing education units (CEUs) or gain the experience necessary to earn full CPC certification. As a remote CPC-A, you gain your experience as a medical coder while you work from home or another remote location. Your duties include looking at patient records and documentation and assigning medical codes to each diagnosis and treatment for billing, records, or insurance claim purposes. Your exact duties can vary from employer to employer.