The purpose of this subchapter is to describe the criteria used to determine whether a provider is eligible to receive Medicaid reimbursement for inpatient hospital services to people aged 65 and older in an institution for mental diseases (IMD) and to describe the methods by which patient and provider eligibility are established and reimbursement for covered services is accomplished. This subchapter applies to all IMD providers.
25 Tex. Admin. Code § 419.371