Rule 23-202-1.1 - DefinitionsA. The Division of Medicaid considers a patient an inpatient if formally admitted as an inpatient with the expectation that he/she will remain at least overnight and occupy a bed even though it later develops that he/she can be discharged or is transferred to another hospital and does not actually use a hospital bed overnight. B. Inpatient services are services that are ordinarily furnished by the hospital for the care and treatments of the beneficiary, solely during his/her stay in the hospital. C. The three (3) day payment window rule refers to the requirement that all outpatient services provided to a beneficiary by the admitting hospital, or by an entity wholly owned or operated by the admitting hospital, within the three (3) days prior to an inpatient hospital admission that are related to the reason for the inpatient hospital stay must be included in the All Patient Refined Diagnosis Related Group (APR-DRG) payment for the inpatient stay.23 Miss. Code. R. § 202-1.1
42 C.F.R. §§ 440.2, 440.10; Miss. Code Ann. § 43-13-121.