DICOM PS3.4 2022c - Service Class Specifications
C.6.4.5.4 Entities Removed From Operational Use

If the SCP supports Removed from Operational Use (0008,0405) (see Section C.6.4.1.2) as a Key Attribute, query responses shall include all entities regardless of the value of that Attribute, unless the SCU has explicitly included matching against that Attribute in the C-FIND request and the SCP supports matching on that Attribute.

Note

As the Study Root Query/Retrieve Information Model - FIND SOP Class is typically used for operational purposes, an SCP implementation of that SOP Class by policy might not return entities with Removed from Operational Use (0008,0405) value "Y".

DICOM PS3.4 2022c - Service Class Specifications