The Iowa Medical Power of Attorney Form gives the Attorney-in-Fact the power to act on behalf of the Principal in matters of medical treatments or health care. Note that, under Iowa state law, this agreement is required to be witnessed by at least two (2) people unrelated to either the Principal or the Attorney-in-Fact. In Iowa, it is the only agreement that requires witnesses.
In Iowa, a Medical Power of Attorney (legally referred to as a Durable Power of Attorney for Health Care Agreement) is an entirely separate document from a Living Will (known simply as a Declaration). If the Principal wants to make their wishes about their End of Life care and funeral arrangements known to their Attorney-in-Fact, they will have to draft and sign a separate Declaration.