Background: The current profile reflects the community consensus minimum expectations for the resource to record, search, and fetch retrieve. It is expected and encouraged that domain specific or implementation specific profile will build on the profile adding other elements and extensions for their use cases. Reasoning: Adding a Must Support for DiagnosticReport.media may impose an undo burden on implementers whose systems do not support this element. These profile do not preclude or prevent implementations or implementation communities to use US Core Profiles and further constraint it as is suggested by the commenter to meet their use cases. Proposed Changes: There is no action needed by US Core on this issue.