As a remote outpatient coder, you work from home to assign medical codes to health care procedures and services for an outpatient facility. Your duties are to review medical records, assign appropriate codes, ensure accurate documentation, follow up with physicians as needed, and correct documents. You also process invoices, submit the claim to insurance companies, and bill each patient. You choose the right billing code based on the procedures and services done at the time of an appointment. Your responsibilities may also include calling insurance companies or patients regarding the treatments or services rendered.