Any hospital that believes the regional per diem quantity applicable to that hospital has been erroneously calculated by OCHAMPUS by greater than $5.00 might undergo the Director, OCHAMPUS, or a designee, evidence supporting a special regional per diem. The kids’s hospital differential, calculated for the bottom interval of fiscal 12 months 1988, shall not be updated for subsequent fiscal years. The base interval shall be fiscal 12 months 1988 and shall characterize total estimated charges for discharges that occurred throughout fiscal 12 months 1988. Length-of-stay outliers shall be recognized and paid by the fiscal intermediary when the claims are processed.