ASC X12 270/271 Beneficiary Eligibility Inquiries

Published 03/13/2023

The ASC X12 270/271 Eligibility Inquiry transaction can be used to inquire about the eligibility, coverage or benefits associated with a health plan, employer, plan sponsor, subscriber or a dependent under the subscriber's policy. All eligibility inquiries are processed at the CMS Data Center. The CMS Data Center uses a single consolidated national eligibility database to respond to the eligibility inquiries.

More information on the ASC X12 270/271 transaction is available on the CMS Electronic Billing & EDI Transaction Web page for Eligibility Inquiry.

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