HI 00601.100 Institution's Status in Determining Reduction in Days
   
   
   
   The status of a psychiatric hospital (or a distinct part of such a hospital) as of
      the individual's first day of entitlement is controlling in determining whether days
      spent there during the preceding 150 days are to be deducted. Thus, deductions would
      be made for days spent in a hospital (or distinct part) which was participating as
      of the individual's first day of entitlement even though it was not participating
      during all or part of the preceding 150 days. However, where an institution is not
      participating as of the individual's first day of entitlement, deductions would not
      be made for days spent in that institution during the preceding 150 days, even though
      the institution is later certified for participation as a psychiatric hospital.
   
   
   Where a participating psychiatric hospital is a distinct part of an institution, deductions
      are made only for days spent in the wards, floors, wings, etc., included in the participating
      distinct part as of the individual's first day of entitlement, even though it was
      not participating during all or part of the preceding days. Deductions are not made
      for days spent in a part of the institution not included in the participating distinct
      part as of the individual's first day of entitlement; e.g., days spent in a custodial
      section of the institution or days spent in a general medical-surgical facility participating
      as a general hospital.