@Brendan Murphy Thank you for reaching out to Microsoft Q&A.
- You can add extended query tags other than tags specified in conformance statement. Patient Name is already supported Searchable attribute.
- You can search all studies with searchable attributes supported in conformance statement like PatientID.
- If you are referring to Events in Azure Health Data Services workspace (refer https://learn.microsoft.com/en-us/azure/healthcare-apis/events/events-deploy-portal), DICOM services is not supported as endpoints and the same has been listed in FAQ(s). Refer Event Grid docs as well.
I would recommend you submit feedback via https://feedback.azure.com/d365community/forum/caab15ac-311a-ed11-b83e-000d3a4d97ea directly to our product team and also, others who are looking for similar features can upvote it too.
Note: DICOM is managed service based on DICOMweb Standard APIs like Store (STOW-RS), Search (QIDO-RS), Retrieve (WADO-RS) (Delete, Change Feed are only non-standard API(s) supported)
Please correct me if I misunderstood your questions.