Final answer:
The electronic format used for preauthorization's and referrals is the EDI 278 transaction set. It allows healthcare providers to obtain necessary approvals from insurance companies through a standardized and efficient process.
Step-by-step explanation:
The electronic format used to obtain approval for preauthorizations and referrals in the healthcare industry is typically an Electronic Data Interchange (EDI) transaction, specifically the 278 transaction set. This transaction set is a standardized format that allows healthcare providers to communicate referral certification and authorization information with payers, such as insurance companies.
The EDI 278 format helps streamline the process by which healthcare providers secure necessary approvals for services that require a preauthorization. It ensures that transactions between parties are consistent, quick, and reliable, which is critical for maintaining efficient operations within medical practices.