184th General Hospital at WWII

I found a passenger list of the Qeen Mary, arrival New York 9.Nov.1945.

Unit Designation: 184th General Hospital, Stat. Code UBU

This list list included:
- Honkomp Margaret M. (32), Rank 1st Lt, ASR 55, ASN N-733977, Arm on Service ANC

Can anybody explain me the list?

Thank you,