California Code, Health and Safety Code - HSC § 123616

(a) “Maternal mental health condition” means a mental health condition that occurs during pregnancy or during the postpartum period and includes, but is not limited to, postpartum depression.

(b) “Perinatal unit” is a maternity and newborn service of a hospital for the provision of care during pregnancy, labor, delivery, and postpartum and neonatal periods with appropriate staff, space, equipment, and supplies.