Will update the language in the scenarios to include as a primary payor-provider use case: "Attachments to support claim submission , medical necessity and other reasons for attachments." Future plans include example scenarios to cover these use cases in supplemental guides. We will add some language to CDex indicating the circumstances when it might be used to solicit prior authorization and claims supporting information and when that should instead be handled via DTR/PAS.  We will also update PAS to note when CDex is an option for getting supporting information for prior authorization outside the PAS process.