Depends. Do you see those changes, that can result form real life heart replacement, as a psychological disorder?
There's quite the difference between the emotional after-effects and life-style changes that follow heart replacement surgery and 'personality changes'. Waking up a different person following surgery that doesn't involve the brain is a psychological or psychosomatic side-effect. Having a change of heart in the metaphorical sense is neither
Also if the dead (i.e ghosts) are real, why would being able to see them be classed as a psychological disorder? Unless we have systems build in to stop us seeing them I guess.
''If' the dead were real, seeing them would not be a disorder but rather a literal 6th sense I suppose. But the dead are not real, and if you see them there is something wrong with you.