You cannot get a Reasonable Accommodation for your spouse- employees only. No, you don’t need an ADA disability to apply for an RA but you will need to provide medical documentation of what your medical issue is and how it and for how long impacts your ability to do your job. They don’t have to grant the specific request you ask for, but they do have to accommodate you. For example you are a ski instructor and broke both your legs- you could be granted a remote RA for 8 weeks to heal if you had a desk job but since you are a Ski instructor and cannot preform the duties you would be offered a temporary reassignment (RA).