Medical billing; Medical billing support services; Medical billing for health professionals and health care institutions; Assisting health professionals in generating letters of medical necessity, pre-authorization or other necessary documentation for submission to a third party payor on behalf of a patient; Billing services in the field of healthcare; Medical records coding services for others in the nature of assignment of diagnostic and procedural codes for purposes of reimbursement from insurance; Providing consulting services in the field of CPT coding to health professionals to assist them with claims submissions to third party payors; and, Assisting health professional in submitting claims to a third party payor on behalf of a patient