Alcohol and Drug Abuse Residential Treatment Grants Act of 1991

Alcohol and Drug Abuse Residential Treatment Grants Act of 1991 - Amends the Public Health Service Act to direct the Secretary of Health and Human Services, acting through the Office of Substance Abuse Prevention, to make grants to public and nonprofit private entities for purposes of providing specified alcohol and drug abuse residential treatment services to: (1) pregnant women and their minor children; (2) women who have given birth within 12 months of requesting treatment services and their minor children; and (3) other parents with whom a dependent child lives and their minor children, at the option of the applicant (except that such parents shall not be given priority in admission over the other eligible individuals).

Authorizes grant applicants to restrict the age and number of children (but not to less than one unless all children are over age 13) that each parent may bring to the facility. Requires the Director to give priority to applicants that assure that they will give priority to providing services to pregnant women, mothers, and children eligible for Medicaid or who are low-income and do not have insurance covering such services.

Describes the residential treatment services.

Prohibits the awarding of a grant unless the applicant agrees that: (1) services will be provided to an individual for such period as is therapeutically required, except that such services may be limited to 12 months; and (2) services will be provided free of charge to individuals eligible for Medicaid and their minor children. Prohibits the awarding of a grant unless the facility: (1) is certified to provide such services and meets all applicable State licensure or certification requirements; and (2) has a certain amount of beds. Prohibits the awarding of a grant unless the applicant submits an application and reports regarding services and agrees that the grant will be used to supplement non-Federal funds for such services.

Provides for evaluations of such services.

Authorizes appropriations.

Amends the Social Security Act to make medical assistance grants under title XIX of such Act (Medicaid) available for individuals receiving services under this Act.