Cost Report Rejections, Amendments & Audits
By costreporting.aiPublished
A cost report rejection means the MAC found the filed report unacceptable — incomplete or non-reconciling — and is treating it as not filed (42 CFR § 413.24). Amendments and audits are the other two ways a filed report changes after it leaves your hands.
The lifecycle after you file
A filed report is first checked for acceptability (reconciling, complete, signed). If accepted, the MAC desk-reviews it and issues a Notice of Program Reimbursement (NPR) — the determination of final settlement (42 CFR § 405.1803). Before the NPR, corrections are made by amending and resubmitting. After the NPR, a settled item can be revisited only by reopening (42 CFR § 405.1885) or appeal. Each path has its own clock.
Why the audit trail decides how this goes
Rejections, desk reviews, and reopenings all turn on one question: can you show how a number was derived? costreporting.ai writes an audit-trail entry for every customer-visible figure — its formula and inputs — and blocks a non-reconciling draft from export, so the most common rejection cause is caught before filing rather than after.
Common questions
Why would a Medicare cost report be rejected?
Most rejections are for an unacceptable filing under 42 CFR § 413.24: missing required worksheets or signatures, or worksheets that do not reconcile to each other. A rejected report is treated as not filed — the filing clock does not stop — so the exposure is the same as filing late.
Can a filed cost report be amended?
Yes. Before the MAC issues its determination, a provider can submit an amended cost report (a full resubmission with an incremented amendment number). After the Notice of Program Reimbursement (NPR), changes go through the reopening or appeal process instead of a plain amendment.
What is a desk review versus an audit?
A desk review is the MAC's standard examination of the filed report against supporting documentation, leading to the NPR. A full audit is a deeper field examination, typically risk- or threshold-triggered. Both rely on the report's audit trail — being able to show how every number was derived is what makes either go smoothly.
What is a reopening?
After the NPR, a settled determination can be reopened under 42 CFR § 405.1885 — generally within three years for provider- or MAC-initiated corrections, and without time limit in cases of fraud or similar fault. A reopening revisits specific items, not the whole report.