While the terms are often used interchangeably, they refer to different practices. Telehealth is a broad term for health services rendered remotely using communication technology, not limited to medical consultations.
Telemedicine is a subset of telehealth that meets the requirements of clinical services (the practice of medicine between a patient and a healthcare provider). Essentially, telemedicine is like a visit to a healthcare provider, but virtually, usually via video-conferencing. Telemedicine providers are required to follow the same Health Insurance and Portability Act (HIPAA) responsibilities for virtual care as they are for in-person patient care.