Early Intervention (EI) Services" means those developmental/ educational, social, and health services provided to developmentally delayed infants and toddlers (0 to 3 years of age) designed to maximize their development and eventual independence. Early intervention services include, but are not limited to: speech and language services, occupational therapy, physical therapy, social work, case management, medical/health services, psychological services, transition services, therapeutic day care, and respite services. Early intervention programs may serve children who are developmentally delayed, have conditions that typically result in delay, or are at risk of substantial developmental delay. (R 314)