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 provide information about the causes and origins, preventive measures, symptoms, screening/diagnostic procedures, and/or methods of treatment or management including the latest research for specific illnesses or disabling conditions.

Programs that help adolescents with chronic diseases or disabilities make a successful transition to adult health care providers. There is usually a period of co-management during which a child is seen by pediatric specialists and adult providers; and an adult care plan is generally developed by the team to document current diagnoses and therapies, and lay out guidelines for the frequency of medical visits to specialists and primary care providers, the role of each adult provider in the overall care plan, and the frequency of lab studies and other clinical evaluations.

Programs that identify infants, toddlers and in some cases, preschoolers who show evidence of or are at risk for lags in physical development, cognitive development, language and speech development, psychosocial development or self-help skills, and provide or coordinate the delivery of an enrichment program in order to minimize the potential for a developmental delay and to meet their current developmental needs. The program may include early identification activities (child find); a developmental evaluation; a review of family concerns, priorities and resources; meetings with the family to develop an individualized family service plan; service coordination to ensure that the individual and his or her family receive needed services which may include but are not limited to physical therapy, occupational therapy, audiology, health/medical services, nursing services, nutrition services, psychological services including specialized play groups or therapy sessions, counseling, speech and language assistance, special instructional services, transportation, and parenting skills development; and ongoing evaluation of the child's progress and his or her changing enrichment needs. Included are "birth to three" programs and federal, state or local programs that address the needs of slightly older children or children not otherwise eligible for "birth to three" programs.

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

The natural or adoptive mothers and fathers of individuals who have physical, sensory, developmental, cognitive, mental or emotional limitations, whose own patterns of personal, social and familial coping have been significantly affected by their responsibility for and concern about the person.

The parents, children, spouses, partners, friends or other relatives or significant others of people who have serious medical conditions which have persisted over a long period of time, whose own patterns of personal, social and familial coping have been significantly affected by interaction with and concern about the chronically ill person.

Children and adolescents who have physical, sensory, developmental, cognitive, mental or emotional limitations, illnesses or injuries that affect their performance in school and their ability to engage in one or more major life activities.