It's unlikely the screens will interchange as Dell has noted.  There is one supplier that does show them: [URL] Your only other option is likely Dell -- and they likely won't sell the part without service/installation.  
My display's digitizer recently broke, making my machine unusable for note taking with a stylus, though the touchscreen works unaffected. I can't seem to find screen replacement parts for this model -- only the 7390 2-in-1, and according to a Dell employee, the displays between these models are not interchangeable despite their specifications being identical. If I'm to repair this device on my own, what are my options? I'm a student so I can't afford to send it in for over a month. Would a 7390 screen truly not be compatible with my model?
XPS 13 9310 2-in-1 display part