3 questions regarding Health Care Proxy/Living Will…

- Does it matter if my Health Care Proxy and Living Will are from 1991? (i.e. do I need a more current version).

- Is it a problem that the address noted for my agent is now incorrect (she moved a few years ago)? Should I leave as is, or update in pen…and what happens if she moves again?

- I read that in addition to the above 2 documents, one needs an ‘Authorization to Release Protected Healthcare Information’, which must be compliant with federal health information privacy laws. Is this doctor/hospital/insurance company specific …or is it something I can complete now and keep with the Proxy/Living Will?

Thanks so much in advance!
My question involves a power of attorney in the state of: