A MassHealth audit usually opens with a routine records request under the agency's own compliance-review authority. It can end in a formal overpayment notice that gives the provider only 30 calendar days to respond in writing or lose the right to appeal it. For home health agencies, dentists, behavioral health providers, and the many other provider types enrolled in MassHealth, the recoupment figure in that notice is rarely the whole exposure. The rules governing the response, set out in the Commonwealth's own Medicaid regulations, decide whether that demand ends in a negotiated resolution or an unreviewable debt.
How a MassHealth Audit Opens
MassHealth's Office of Medicaid conducts compliance audits of enrolled providers under 130 CMR 450.205, the regulation that lets the agency request a provider's records to conduct a compliance audit. These reviews can examine a provider's financial and statistical records, including cost reports, financial statements, tax returns, and invoices, along with documentation of the medical necessity of services provided to MassHealth members. State Medicaid audits typically build from a pattern across many claims, a complaint, a referral, or a scheduled federal sample, not from one claim standing alone, as Health Law Alliance's guide to how state agencies select providers for audit.
The Overpayment Notice and the 30-Day Reply
Once MassHealth determines a provider was overpaid, it issues an overpayment notice under 130 CMR 450.237. To preserve any right to challenge that determination, the provider must reply in writing within 30 calendar days of the date on the notice. The reply has to specifically identify and address each allegation the provider disputes, with supporting documentary evidence, because MassHealth considers only the information submitted with a timely reply. A provider that stays silent, or replies late, loses the right to an adjudicatory hearing and to judicial review of whatever the agency decides next. That 30-day reply deadline is separate from the federal 60-day overpayment self-disclosure window, which applies when a provider finds its own billing error rather than MassHealth finding it through an audit.
A provider that fails to reply in writing within 30 calendar days of a MassHealth overpayment notice forfeits the right to an adjudicatory hearing and to judicial review of the agency's final determination.
Appealing to the Board of Hearings
If a timely reply does not change MassHealth's position, the agency issues a final determination and the clock resets. Under 130 CMR 450.241, the provider has 30 calendar days from the date of that final determination to file a claim for an audit appeal with both the Board of Hearings and the MassHealth agency itself. The claim has to identify each disputed issue and fact, state the provider's position, and describe the evidence that will support it at the hearing. A claim counts as filed only on the date it is actually received by both the Board of Hearings and MassHealth. Filing with just one of them, filing late, or otherwise failing to meet these requirements can lead the Board of Hearings to dismiss the claim, though the agency may vacate that dismissal in writing on a showing of good cause. Overpayment findings that reveal a pattern rather than an isolated error can also raise exposure under the false claims act or draw a referral for OIG exclusion, which makes the response to the first notice worth more than the number printed on it.
Why Early Legal Counsel Is Critical
It is critical that MassHealth providers promptly retain experienced healthcare defense counsel upon receiving an overpayment notice, a records request, or any other audit-related inquiry. Early legal intervention can help structure a reply that actually preserves appeal rights, avoid admissions that narrow the provider's position at a later hearing, and keep the Board of Hearings deadline from passing unnoticed. Delaying representation until after the 30-day reply window closes can eliminate the provider's options before the matter is ever heard.
How Health Law Alliance Can Help
Health Law Alliance's attorneys have overseen 2,000+ audits and handled 5,000+ matters, with 25+ years of experience.
Health Law Alliance's Medicaid audit defense attorneys represent providers in MassHealth overpayment determinations and Board of Hearings appeals, from the first records request through the final hearing decision. If your practice has received a MassHealth overpayment notice or audit inquiry, contact Health Law Alliance's Medicaid audit defense attorneys for a free, confidential consultation.
