If you are making a clinical negligence cerebral palsy claim for your child, you have until their 18th birthday to do so. If your child is over the age of 18, the cerebral palsy claim time limit will depend on the severity of their condition. If they cannot make the claim themselves, there is no time limit. For children with cerebral palsy and the mental capacity to choose to make a claim themselves, they have until they are 21 to do so.