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(iv) patients hospitalized for rehabilitation services for the rehabilitation of injured, disabled, or sick persons;

(v) patients in a hospital receiving psychiatric services for the diagnosis and treatment of mental illness;

(vi) newborn infants in hospital nurseries; and

(B) not to include patient days related to the treatment of patients

(i) at licensed nursing facilities;

(ii) in a residential treatment bed;

(iii) on a leave of absence from a hospital beginning with the day the patient begins a leave of absence;

(iv) who are in a hospital for observation to determine the need for inpatient admission; or

(v) who receive services at a hospital during the day but are not housed there at midnight;

(5) “Medicaid-eligible inpatient days” means patient days at licensed hospitals that are calculated

(A) to include Medicaid-covered and Medicaid-noncovered days related to a hospitalization for acute treatment of the following:

(i) injured, disabled, or sick patients;

(ii) substance abuse patients who are hospitalized for substance abuse detoxification;

(iii) swing-bed patients whose hospital level of care is reduced to nursing facility level without a physical move of the patient;

(iv) patients hospitalized for rehabilitation services for the rehabilitation of injured, disabled, or sick persons;

(v) patients in a hospital receiving psychiatric services for the diagnosis and treatment of mental illness;

(vi) newborn infants in hospital nurseries; and

(B) not to include Medicaid covered and Medicaid non-covered patient days related to the treatment of patients

(i) at licensed nursing facilities;

(ii) in a residential treatment bed;