In Version 6.5 there are several new API for the VCSA/VCenter as such. But even in older versions were some XML/JSON values provided through an url with health states.

It would be great if the vmware module/agent would implement an vmware.vc.health scheme or so.

http://www.virtuallyghetto.com/2016/11/new-vsphere-6-5-apis-worth-checking-out.html