Aside from WebMD, I've never heard of anything like that, and personally would never want something like that used in clinical practice. Software is no substitute for nurses and doctors who actually learned the medical information and use their critical thinking skills to assess and diagnose a patient. Let's not forget that assessment is not a one-size-fits-all type of practice. I can have two patients with the same diagnosis who present very differently. How on earth would a software program know the difference when they can't see, hear, or feel the patient?
It's a dangerous day when we start letting computers be our brains.