Criteria. Except as provided in §B of this regulation, a Program participant shall be enrolled in the Maryland Medicaid Managed Care Program, described in this chapter, if the participant is eligible for receipt of Medical Assistance benefits by qualifying: As categorically needy or medically needy under COMAR 10.09.24, unless the participant is: 65 years old or older; Newly eligible and 64 1/2 years old or older; Eligible to receive Medicare benefits; Determined medically needy under a spend down; or Otherwise certified for a period of less than 9 months; For the Pregnant Women and Children's Program on or after January 1, 1997; or For the Maryland Children’s Health Program on or after July 1, 1998; or For the Separate CHIP Program and CHIP Health Services Initiative on or after July 1, 2023. A participant is not eligible for the Maryland Medicaid Managed Care Program if the participant: Has been, or is expected to be, continuously institutionalized for more than: 90 successive days in a long-term care facility; or 30 successive days in an institution for mental disease (IMD); Is institutionalized in an intermediate care facility for individuals with intellectual disabilities or persons with related conditions (ICF/IID); Is enrolled in: Home Care for Disabled Children under a Model Waiver, pursuant to COMAR 10.09.27; The Family Planning Waiver Program pursuant to COMAR 10.09.58; or The Employed Individuals with Disabilities Program pursuant to COMAR 10.09.41; Is a child receiving adoption subsidy who is covered under the parent's private insurance; Is a child under State supervision receiving adoption subsidy who lives outside of the State; Is a child in an out-of-State placement; or Is an inmate as defined in COMAR 10.67.01.01.