The problem with diagnostics like that is that you failing to report a critical symptom because it isn’t important to you (mention headache, not Mexican trip and pork consumption the prior month or respiratory symptoms but not kids’ classmate with EV-68) can lead to a wrong diagnosis. But once diagnosed, getting it changed is difficult.
Another problem is these programs go for the fat of the bellcurve in finding problems. If you have something not normally seen in your local population, the machine diagnosis will never alert to it.
It will find colds, flu, ulcers, diabetes, heart disease, etc., but will totally miss many cancers, and bacterial and viral infections not known to the area (ebola sound familiar? How about tularemia?, and there are a host of others)
But this is where 0bamacare is taking the US healthcare system.