As a medical payment poster, you handle medical coding and payment posting for a medical practice. Your job duties include posting payments both electronically and manually, maintaining accurate medical billing records, and documenting revenue from patient payments and insurance reimbursements. The minimum qualification for a career as a medical payment poster is either a high school diploma or GED certificate. However, earning certificates in medical billing and coding can help you find better medical payment poster and scribe jobs. To succeed in the medical billing industry, you need to demonstrate computer skills, attention to detail, and mathematical ability.