What is the UMLS Annual Report?
As part of the UMLS license agreement, you agree to provide NLM with a yearly report of how you used the UMLS.

Where and when do I complete the UMLS Annual Report?
The UMLS Annual report is available through your UMLS Terminology Services (UTS) profile every January. NLM will send several e-mail reminders alerting users when it becomes available.
Where can I find more information about the UMLS? 
Please visit the UMLS FAQ