CPC Course: A Certified Professional Coder (CPC) is an individual of high professional integrity, who has passed a coding certification examination sponsored by the American Academy of Professional Coders. The examination consists of questions regarding the correct application of CPT, HCPCS procedure and supply codes and ICD-10-CM diagnosis codes used for billing professional medical services to insurance companies. Certified Professional Coder (CPC) is the first line of defense against noncompliance and down-coding for any medical provider. Certified coders help prevent legal difficulties and ensure providers receive full reimbursement in a timely manner.