Use of electronic mail and the telephone to answer patients’ questions, prevent unnecessary office visits, and consult online with other physicians. Insurers may or may not reimburse providers for e-care using CPT code 0074T for online medical evaluation. Physicians who offer this service have patients either prepay an annual fee for unlimited online messaging or pay a predetermined amount for each e-visit (fee-for-service model).

Any transaction done using the Internet, such as purchasing medical supplies, books, and products and services and transmitting prescriptions and insurance claims. Many pharmacies will not accept electronic prescriptions, and transmission to pharmacies is illegal in some states.
***
The buying and selling of goods by way of electronic media, such as the Internet.