A grandparents' medical consent form allows a parent or legal guardian to hand over all responsibility regarding their child's healthcare decisions. Ensure your child's well-being with our easy-to-use child medical consent form.Grandparent Consent to Minor (Child) – Specifically for grandparents who will have the legal right to choose the medical treatment for a minor (child). I give permission for the administration of the medication, according to the instructions listed, to the child listed above. Date of authorization:. You should complete a consent form for each child. If you wish to have your medical or billing information released to family members you must sign this form.