The Error Found After the Notice of Program Reimbursement
Valley Ridge Regional is a 210-bed acute care hospital with a June 30 fiscal year end. Its FY2025 cost report went to the MAC through MCReF on March 4 without an extension request; the due date was February 28. The MAC accepted the submission, and a Notice of Program Reimbursement was issued the following January 12. On March 2, the reimbursement manager finds two problems while preparing the FY2026 report: (1) a home office allocation of $248,000 was recorded net of a $40,000 credit that belonged to a related entity, so an unallowable $40,000 remains in allowable cost; and (2) $96,000 of allowable purchased-nursing costs were recorded as a non-allowable adjustment because a charge code was mistyped. She also learns that 1,150 Medicare inpatient days were omitted because the system reported observation days separately even though those patients were admitted, distorting the DSH percentage. The controller proposes to file an amended report and let the MAC sort it out.
1. Can the hospital simply file an amended report at this point? Describe the procedural vehicles available, their deadlines, and which vehicle fits each of the three corrections.
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No. Once the NPR is issued, the report is settled, and a post-NPR submission is treated as a request to reopen the settled determination.
Two regimes are in play:
Reopening (42 CFR 405.1885). The MAC may reopen on its own motion or at the provider's request within three years of the NPR date. From January 12, the hospital has until roughly mid-January three years out. A reopening request must be specific and supported: the misposted $40,000 home office credit, the $96,000 of purchased nursing misclassified as an adjustment, and a corrected Worksheet S-2 day count with a recomputed DSH percentage and revised settlement.
PRRB appeal. A hearing request must be filed within 180 days of receiving the NPR - here about July 11 - and the amount in controversy must meet the jurisdictional threshold ($10,000 for a single provider). But the PRRB reviews determinations the MAC actually made. The $40,000 and the $96,000 were never decided by the MAC; they are reopening material, not appeal material. The day-count issue distorts the DSH computation the MAC did decide, so it is the one item that is genuinely appealable.
Practical sequence: file one consolidated reopening request covering all three items, and separately preserve appeal rights on the DSH computation before day 180 in case the reopening stalls.
2. Which corrections create a repayment obligation, when does the 60-day clock start, and how do you sequence the refund against the reopening request?
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42 CFR 401.305 requires a provider that has identified an overpayment to report and return it within 60 days of identification. Identification is not the moment a suspicion arises; the provider may spend up to six months of reasonable diligence confirming the facts. Here that diligence is essentially complete.
The two overpayments are the $40,000 of unallowable home office cost left in allowable cost and the DSH distortion from the omitted 1,150 days (a shrunken denominator raises the DSH percentage and therefore the payment). The $96,000 of understated nursing cost is favorable to the hospital and creates no repayment duty, but it is lost if the three-year reopening window closes.
Sequencing is the trap. A reopening request does not by itself return money within 60 days. The clean path is to (1) refund or credit the identified overpayment to the MAC with a written explanation that identifies the cost report, the worksheet, and the amount, and (2) file the reopening request covering all three items, showing the refund as an offset so the two are not double-counted. Reporting an overpayment does not waive the right to claim the understated cost; they are independent corrections. Document the identification date, the diligence steps, and the refund date, because an auditor will ask when the hospital knew.
3. The report was filed four days after the due date. What is the consequence, can it be cured, and does it affect the reopening analysis?
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The reduction is statutory and automatic. A cost report filed after the fifth month following fiscal year end triggers a payment reduction equal to one day of Medicare payment for each day late, capped at 100 percent of the year's Medicare payments. The MAC has no discretion to waive it on equitable grounds; the only avoidance is a timely extension request filed before the due date, which the hospital did not submit.
Four days is a small dollar amount for a 210-bed hospital, but it appears on the settlement and should be verified on the PS&R and the remittance advice. Do not assume silence means waiver - MACs sometimes apply the reduction later through an adjustment.
The late filing does not change the reopening analysis: a late report is still a filed report that becomes final when the NPR issues, and the three-year reopening clock runs from the NPR date, not from the due date. It also does not affect the 60-day overpayment obligation. The lesson is procedural, not analytical: a report can be substantively wrong and still be final, and a report can be substantively right and still be penalized for lateness.