Medicaid Child Health Amendments of 1990

Medicaid Child Health Amendments of 1990 - Amends title XIX (Medicaid) of the Social Security Act to phase-in mandatory Medicaid coverage of children whose family income is below the Federal poverty level.

Permits States to provide Medicaid coverage to children who have attained age one but not age six and whose family income does not exceed 185 percent of the Federal poverty level. (Currently, States are required to cover children between such ages whose family income does not exceed 133 percent of the Federal poverty level.)

Requires States to: (1) process Medicaid applications at locations which include locations other than those used for applications under part A (Aid to Families with Dependent Children) (AFDC) of title IV of the Social Security Act; and (2) use applications other than those used under the AFDC program.

Permits States to provide an additional 12 months of extended Medicaid coverage to families whose AFDC eligibility ends due to the caretaker relative's employment. (Currently, States are required to provide 12 months of such extended coverage.)

Requires States which provide prospective Medicaid payments to hospitals to reimburse hospitals which serve a disproportionate share of low-income patients for exceptionally costly or lengthy stays by children.

Directs States to provide Medicaid coverage for disabled children who are eligible for benefits under title XVI (Supplemental Security Income) of the Social Security Act.

Prohibits the discontinuance of a child's Medicaid benefits until he or she is determined not to be eligible for such benefits on any basis.

Allows States to extend Medicaid coverage to foster care children whose incomes are above State cash assistance eligibility levels but below the Federal poverty level.