Here's a compatiblity list:
The lcd screen digitizer for Galaxy S4 (Without frame) will compatible with S4 all models - i9500,i9505,i545,L720,R970,i337,M919
The LCD Screen digitizer With Frame:
i9500 (with frame, not compatible with other models)
i9505 (with frame, not compatible with other models)
i545 (with frame, compatible with L720,R970)
i337(with frame, compatible with M919)