5G networks have many attractive features which can improve capacity and speed to provide reliable and speedy connectivity to thousands of devices of Internet of Things. Telemedicine relies on mobile healthcare system which includes alarm system, clinical data storage, and wireless communication where transmitted data might be damaged or leaked without proper security measures. This research proposed a privacy-preserved three-factor authentication with time-bound (PP-3FAT) scheme for 5G-IoHT telemedicine systems to achieve security requirements.