Health care providers that offer the Child Health and Disability Prevention Program, a health assessment and treatment program for low-income children and youth through age 21 that is designed to assure early detection, diagnosis and treatment of diseases or impairments which might adversely affect the individual's growth and development. CHDP exams generally include a complete physical examination; a dental assessment; a nutritional assessment; vision and hearing screening; immunizations; urine, blood and tuberculosis screening tests; specialized laboratory tests, as needed; and health education on topics such as tobacco use prevention, lead poisoning prevention and other issues pertaining to child health.

Programs that offer a procedure that is designed to identify children who should receive more intensive assessment or diagnosis for potential developmental delays. Screening tools can be specific to a disorder (e.g., autism), an area (e.g., cognitive development, language, or gross motor skills), or they may be general, encompassing multiple areas of concern; and rely heavily on parent observation. They do not provide conclusive evidence of developmental delays and do not result in diagnoses. A positive screening result should be followed by a thorough assessment. The goal of developmental screening is to allow for earlier detection of delays in order to improve child health and well-being for identified children.

Programs that maintain information about community resources that are appropriate for a specific target group or human services sector (for example, youth programs or addiction services) and which link individuals who are in need of specialized services with appropriate resources and/or which provide information about community agencies and organizations that offer specialized services.

Individuals who are generally between the ages of 18 and 25 depending on the ages that specific programs use for qualification.