yes you could, essentially you could use 1990-1993 DX-EX parts
dx/lx/ex are the trim levels, interior is slightly different for the dx compared to the lx/ex.
but outside body parts (ie door handles, fenders trunk hood) are all the same for 1990-1991 assuming there both 2 door or both 4 door. or same with 1992-1993 models.
1992-1993 parts will fit as well, but 1992 they upgraded the front end slightly and the rear, below are pictures to illustrate.
1990-1991 accord (cb) front end (notice the clear/amber turn signals on the bumper)
http://upload.wikimedia.org/wikipedia/commons/0/00/90-91_Honda_Accord_sedan.jpg
1990-1991 accord (cb) rear (notice the turn signals are on top, as opposed to the 1992-1993 being on bottom, and the trunk lid license plate holder is formed different as well)
http://www.honda-accord-guide.com/1990-93-Honda-Accord-90802041990219.JPG
1992-1993 accord (cb) front end

notice the bumper lights are solid orange and the front is slightly different)
http://honda-tech.com/picture.php?albumid=5968&pictureid=3923
1992-1993 accord (cb) rear: (notice the turn signals are now on the bottom as different than the 90-91)
http://www.cargurus.com/images/2009/10/09/15/41/1992_honda_accord_2_dr_ex_coupe-pic-1190386553377765029.jpeg
you shouldnt have a problem with the radiator as well either.