The D#9 sus 4 chord (D#9 suspended 4, or C#/D#) contains the notes D#, G#, A#, C# and E#. It can be thought of as a D#9 chord with a 4th (instead of a 3rd) or a C# chord with a D# in the bass.

10 Ways To Play The D#9 Sus 4 chord

If you’ve come to this page just to view some chord diagrams for D#9 Sus 4 (C#/D#), here they are.

D Sharp 9 Sus 4 Chord 10 Shapes