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The 270 is an inbound transaction to ISDH. An outbound interchange control structure wraps transactions that are created by ISDH and returned to the requesting provider. 271 is ISDH's outbound response transaction.

The EDI 278 transaction set is called Health Care Services Review Information. A healthcare provider, such as a hospital, will send a 278 transaction to request an authorization from a payer, such as an insurance company.

The 270 Transaction Set can be used to make an inquiry about the Medicare eligibility of an individual. The 271 Transaction Set is the appropriate response mechanism for health care eligibility benefit inquiries. There are several levels (i.e. Information Source, Information Receiver, Subscriber, etc.)

X12 EDI 270 The EDI 270 Eligibility, Coverage, or Benefit Inquiry is a request for information from a healthcare provider to a health insurance provider about a policy's coverages, typically related to a specific plan subscriber.

271 is ISDH's outbound response transaction.

The 270 and 271 Transactions are used in tandem: the 270 Transaction is used to inquire about the eligibility benefit status of a subscriber, and the 271 Transaction is returned in response to that inquiry.

The 270 transaction is the EDI function that requests eligibility and benefit information from the Insurance Company of the patient. It is set to receive care from a Provider of Service. The 271 transaction is the EDI function that responds eligibility and benefit information of the patient.

The 270 Transaction Set is used to transmit health care eligibility benefit inquiries from health care providers, insurers, clearinghouses and other health care adjudication processors. The 270 Transaction Set can be used to make an inquiry about the Medicare eligibility of an individual.