Translating X12 to FHIR

Last updated: Dec 10, 2025
PRODUCT OWNER
PAYER
HCO
HEALTH TECH VENDOR

X12 is the HIPAA-adopted standard for exchanging insurance data. Like with your elders, you should respect X12 since it standardizes administrative data among healthcare organizations and payers.

As the industry strives for better interoperability, though, you need a modernized solution for working with a paradigm like X12.

Who needs to translate from X12 to FHIR®

We simplify and automate processes that use X12 for data exchange. For example, say goodbye to manual workflows like faxing for prior authorizations. Redox can benefit customers on any side of the X12 data exchange, including:

  • vendors
  • providers
  • payers
  • clearinghouses
  • prior authorization management companies

How X12 translation works

You push X12 data with Redox FHIR® writeback operations to a cloud destination. Then, you can access the data with FHIR® whenever you need.

With X12 translation, you can perform these Redox API actions with FHIR®:

Mappings between X12 messages and FHIR®

Check out which X12 messages we normalize below.

X12 message

Description

FHIR® operation

270

Find out what’s included in a patient’s insurance coverage before offering services.

CoverageEligibilityRequest/$submit

271

Respond with a patient’s eligibility information to the requesting healthcare organization.

CoverageEligibilityResponse/$respond

275

Exchange additional patient information for a prior authorization.

Claim/$attach

276

Check the status of a previously submitted claim.

Claim/$status

277

Respond with the status of a submitted claim.

ClaimResponse/$status-response

278

Request an approval for a prior authorization request.

Claim/$submit-preauthorization or Claim/$submit

278

Respond with an approve/decline to a prior authorization request.

ClaimResponse/$respond

835

Respond with payment for a submitted claim.

ClaimResponse/$payment

837P

Submit a claim for professional billing (i.e., provider time or services during an outpatient visit).

Learn how to send a test 837 message in the Redox dashboard.

Claim/$submit-professional

837I

Submit a claim for institutional billing (i.e., nursing care, services, medications, or supplies used during an inpatient visit).

Learn how to send a test 837 message in the Redox dashboard.

Claim/$submit-institutional