Hi your talking about the tag scheme for the construction of a hospital.
building=construction
construction=hospital
And add for instance the services it is giving with or without a permit such as, since neither you or I cant tell if they have a permit when performing services is not it ?
dental services=yes
first_aid=yes
surgical-services=no
and so on.
And change it at a practical way or manor when things change.
Access=no if it is giving no services at all, it is still a hospital like a church during week days when it is closed building=church even when out of service.
Greetz