(a) On and after January 1, 2024, the inpatient, per diem rate to be paid to a hospital for inpatient psychiatric services shall be not less than 90% of the per diem rate established in accordance with subsection (b-5) of this Section, subject to the provisions of Section 14-12.5.

(b) For purposes of this Section, "hospital" means a hospital with a distinct part unit for psychiatric services. For purposes of this Section, "inpatient psychiatric services" means those services provided to patients who are in need of short-term acute inpatient hospitalization for active treatment of an emotional or mental disorder.

(b-5) Notwithstanding any other provision of this Section, the inpatient, per diem rate to be paid to all safety-net hospitals for inpatient psychiatric services on and after January 1, 2021 shall be at least $630, subject to the provisions of Section 14-12.5.

(b-10) Notwithstanding any other provision of this Section, effective with dates of service on and after January 1, 2022, any general acute care hospital with more than 9,500 inpatient psychiatric Medicaid days in any calendar year shall be paid the inpatient per diem rate of no less than $630, subject to the provisions of Section 14-12.5.