Tennessee Code Title 56. Insurance § 56-7-3708

(a) A health carrier or utilization review organization shall accept and respond electronically to prior authorization requests from a healthcare provider submitted through a secure electronic transmission as determined by the carrier or organization.

(b) If a prior authorization for a prescription drug is submitted electronically using the National Council for Prescription Drug Programs (NCPDP) SCRIPT Standard for electronic prior authorization (ePA) transactions, then the health carrier or utilization review organization must accept and respond to the prior authorization request using the NCPDP SCRIPT Standard for ePA transactions.

(c) This section does not require a healthcare professional to submit prior authorization requests electronically.