There are two entries in the list of naming systems for the same DICOM Controlled Terminologies code system. One links to http://build.fhir.org/codesystem-dicom-dcim.html. The other links to the DICOM entry on http://build.fhir.org/terminologies-systems.html that links to the above.

One of these should probably be removed.

(Additionally, the URL http://build.fhir.org/codesystem-dicom-dcim.html should probably be changed from "...dcim.html" to "...dcm.html"; the current URL has a mispelling ('i' after 'c'), and DICOM never uses "dcim" or "dicm" in its own documentation.)