Young Adult Healthcare Coverage Act of 2009 - Amends the Employee Retirement Income Security Act of 1974 (ERISA) and the Public Health Service Act to require a group health plan that provides coverage for dependent children to make available such coverage, at the option of the participant involved, to a participant's child who (but for age) would be treated as a dependent child and who: (1) is under 30 years of age; (2) is not married; (3) has no dependents; (4) is a citizen or national of the United States; and (5) is not provided coverage as a participant, beneficiary, or enrollee under any other creditable coverage.
Applies such requirement to individual health insurance coverage.