The psychosocial aspects of pediatric hereditary cancer range beyond initial coping with the genetic diagnosis and are situated across the lifespan and continuum of care. Over the past 20 years, a growing body of evidence has demonstrated the need for tailored support to identify and manage psychosocial concerns of pediatric patients with, or at risk of, a cancer predisposition syndrome (CPS). As the unmet needs of young people with a CPS continue to grow, the importance of psychology in the genomic era has expanded. This paper discusses how psychologists can be integrated with inter- or multi-disciplinary teams to address complex psychosocial needs.