An instance of hyperinsulinism (disease) that is caused by an inherited modification of the individual's genome. The disease is MONDO_0017182 (familial hyperinsulinism). Also known as: FHI, HHI, congenital hyperinsulinism, familial hyperinsulinemic hypoglycemia, hereditary hyperinsulinism (disease), hyperinsulinemia of infancy, neonatal hyperinsulinism, nesidioblastosis.