Objective. To present an epidemiologic profile of children with specia
l health care needs using a new definition of the population developed
by the federal Maternal and Child Health Bureau. Methods. We operatio
nalized the new definition using the recently released 1994 National H
ealth Interview Survey on Disability. Estimates are based on 30 032 co
mpleted interviews for children <18 years old. The overall response ra
te was 87%. Results. Eighteen percent of US children <18 years old in
1994, or 12.6 million children nationally, had a chronic physical, dev
elopmental, behavioral, or emotional condition and required health and
related services of a type or amount beyond that required by children
generally. This estimate includes children with existing special heal
th care needs but excludes the at-risk population. Prevalence was high
er for older children, boys, African-Americans, and children from low-
income and single-parent households. Children with existing special he
alth care needs had three times as many bed days and school absence da
ys as other children. An estimated 11% of children with existing speci
al health care needs were uninsured, 6% were without a usual source of
health care, 18% were reported as dissatisfied with one or more aspec
ts of care received at their usual source of care, and 13% had one or
more unmet health needs in the past year. Conclusions. A substantial m
inority of US children were identified as having an existing special h
ealth care need using national survey data. Children with existing spe
cial health care needs are disproportionately poor and socially disadv
antaged. Moreover, many of these children face significant barriers to
health care.