Medical transcription, coding, and billing are three parts of one contiguous process. While a medical transcriptionist or scribe will focus on literally transcribing everything included in a doctor's report, a medical coder will assign alpha-numerical values to all evaluations, tests, and procedures performed. Your medical billing service then uses those codes to make the appropriate reimbursement request via the patient's individual insurance company. It is not uncommon for the medical billing service to be in close contact with the physician, transcriptionist, and coder to ensure that their request is as accurate as possible in order to improve reimbursement rates.