The online health care application has a Date of Death field right next to the Date of Birth field. This is because in some cases a family member that has died is still considered part of that household for the rest of the calendar year.
In any case, people often don't read and put their Date of Birth in both fields. The system considers that person deceased, and they are not eligible for any benefits.
Internally, we call these "Zombie" cases. The living dead.
I have often stated that if the State did a cost benefit analysis, fixing the application would pay for itself in no time. We spend far too many resources fixing problems for people who don't read.