Medicare Claims Processing Manual (Pub. 100-04), Ch. 19 § 110.3
Critical Access Hospitals
110.3 - Critical Access Hospitals
(Rev. 1040, Issued: 08-25-06, Effective: 09-11-06, Implementation: 09-11-06)
All IHS hospitals that elect CAH status, and are certified as such, are reimbursed under the
reasonable cost method of reimbursement. The all inclusive inpatient per diem rate, the all
inclusive outpatient per visit rate, and the all inclusive inpatient ancillary per diem rate are
calculated based upon the individual CAH’s cost report filed with the A/B MAC (A). These
rates are facility specific rates and are not to be confused with the AIRs published in the
Federal Register by the IHS for each calendar year. A CAH cost report is subject to audit
by its A/B MAC (A). The A/B MAC (A) can disallow costs if those costs did not comply
with the Principles of Cost Reimbursement published in the Provider Reimbursement
Manual 15-1. Any costs disallowed are subject to appeal by the CAH. There is also a final
settlement of an IHS CAH cost report. A final settlement necessitates the issuance of a
Notice of Program Reimbursement (NPR) by the A/B MAC (A). The NPR advises the
CAH if a balance is due the hospital or the program is due repayment. The NPR also advises
the CAH of any cost disallowance, its appeal and reopening rights. It should be noted that
an IHS hospital that is not a CAH does not receive an NPR and does not have a final
settlement.
Effective for cost reporting periods beginning on or after January 1, 2004, payment for
inpatient services, other than a distinct part unit, is 101 percent of the reasonable costs.
Effective for cost reporting periods beginning on or after January 1, 2004, payment for
outpatient services is 101 percent of the reasonable costs. For a detailed explanation
concerning payments to CAHs, see 42 CFR, §413.70. For cost reimbursement principles
see 42 CFR Part 413 and Provider Reimbursement Manual 15-1. For Cost Reports see the
Provider Reimbursement Manual 15-II, the chapter on hospital cost reports.