Today, the field of telehealth lacks a comprehensive taxonomy that reflects the variety of remote interactions, technologies used, and personnel involved. The Center for Information Technology Leadership (CITL) has created a taxonomy that categorizes telehealth around four factors: type of telehealth interaction, location of the controlling medical authority, urgency of care, and timing of communication. This comprehensive taxonomy may help to define the field of telehealth and may help with adoption, research, and reimbursement.