RL-CI4-CHR2-20-IN 5 CHR-12969 (11/25)  Gaucher Disease, Type II or III.  Infantile Tay Sachs.  Niemann-Pick Disease.  Pompe Disease.  Sickle Cell Anemia.  Type 1 Diabetes.  Type IV Glycogen Storage Disease.  Zellweger Syndrome. This definition does not include premature birth or stillbirth caused or contributed to by a Critical Illness or Additional Child Disease. Cerebral Palsy means a group of disorders of the development of movement and posture causing activity limitation that are attributed to progressive disturbances that occurred in the developing fetal or infant brain. The motor disorders of Cerebral Palsy are often accompanied by disturbances of sensation, cognition, communication, perception and/or behavior and/or by a seizure disorder. Child or Children means a child from the moment of birth, but less than 26 years of age, and who is one of the following:  Your natural or adopted child from the earlier of the date of placement or order granting custody.  Your stepchild.  A child or grandchild for whom you are a legal guardian.  Your foster child. The child must also meet all of the following conditions:  Not be on full-time active duty in the armed forces of any country or subdivision thereof.  Legally reside in the United States or its territories or possessions.  Not be insured under the Policy as an Employee or Spouse. This definition includes your Child age 26 or older who is incapable of self-sustaining employment due to physical or intellectual disability. Written proof of the Child's incapacity must be furnished to us at our home office within 31 days after the Child reaches age 26. We may require, at reasonable intervals, but not more than once a year after the two year period following attainment of the limiting age, evidence satisfactory to us that the incapacity is continuing. Coverage will continue while the Child remains incapable of self-sustaining employment due to physical or intellectual disability and continues to meet the definition of Child except for the age limit. Congenital Birth Defects means the malformation of an organ or organ system that results in the recommendation of surgery. Examples include, but are not limited to, the following:  Heart defects.  Lung defects.  Spina Bifida.  Cleft lip or palate.  Limb malformations. Congenital Birth Defects includes developmental disorders of the brain or being born blind without the recommendation of surgery. Congenital Birth Defects does not include prematurity.