A grandparents' medical consent form allows a parent or legal guardian to hand over all responsibility regarding their child's healthcare decisions. The grandparent medical consent form is a document that gives permission to a grandparent to make health care decisions on behalf of a minor child.Easily grant medical decision-making authority for your child with a custom Child Medical Consent form. Protect your child's health in any situation. My MIL typically watches my 13 mo three days a week, for about six hours each day while my husband and I are both working. Do you need a grandparents' medical consent form? Here are downloadable medical consent form templates that you can use for a child's grandparents. Click on Complete Request below to submit an online Authorization for Disclosure of Health Information. Check out our grandparent medical consent form selection for the very best in unique or custom, handmade pieces from our templates shops.