Ensure your child's well-being with our easy-to-use child medical consent form. A copy of this authorization is valid in lieu of the original.I further understand I may withdraw my consent in writing at any time. If you have any questions, please call 954-5 19-1260. A grandparents' medical consent form allows a parent or legal guardian to hand over all responsibility regarding their child's healthcare decisions. How to fill out the Grandparent Medical Consent Form for Minors? These forms will require that you enter information that had a drop down menu option when completing the Smart Forms.