If additional information is needed, the payer can request the information in a number of means: Respond with an FAX or upload to a portal Change to: If additional information is needed, the provider can respond with  the information via a number of preferred methods : [Delete the existing #1 entirely Reorder the rest of the bullets:] An X12 275 response (by provider) to a X12 278 response (as represented in the response FHIR bundle) A CDex “Push” transition based on an X12 278 response Resubmission of the PA request with additional information A FHIR based request for additional information using DTR. The note that would be returned would be “please launch DTR with a context of this authorization request.”