Quick Answer
SUD reimbursement due diligence should connect the services delivered, the right to bill, recorded revenue and cash ultimately collected. Prepare a payer-contract inventory, reconciled monthly reporting, receivables by service period, denial and appeal evidence, and a current issues log. Confirm what the transaction changes for enrollment and payer relationships. Use legally approved methods for patient-level testing, and preserve source records when questions arise. The objective is a traceable explanation of earnings and collections, including their limitations.
Build a trail from care delivered to cash collected
A buyer reviewing treatment-center revenue is asking several questions at once. Were the services provided? Were they covered and properly supported? Was the right entity and professional entitled to bill? How much was recorded as revenue, and what cash has actually arrived? A strong diligence package makes that trail understandable without requiring the buyer to reconstruct it from unrelated exports.
Start with the reporting period and define every date used. Service date, submission date, adjudication date, posting date and bank receipt date describe different events. A collection report grouped by receipt month cannot be compared directly with a service-month revenue report without explaining the lag.
Assign a finance lead and a revenue-cycle lead to prepare the package together. They should agree the definitions, reconcile differences and retain the source reports supporting each version. Record systems changes, location openings and other events that affect comparisons across periods.
For the broader diligence framework, see Addiction and SUD due diligence and ownership transition. This article concentrates on the reimbursement evidence buyers need to test and the operational questions that evidence should answer. Addiction and SUD due diligence and ownership transition
Assemble a payer inventory that reaches the actual contract
Organize payer information by legal counterparty, product or plan, network status, service, location and billing entity. A familiar insurer name can cover several arrangements with different reimbursement and authorization rules. Combining them too early can hide the relationship that matters most to the buyer.
Attach the executed contract, relevant amendments and applicable rate materials. Show effective dates and identify documents that are missing, disputed or still under negotiation. Distinguish signed terms from proposed increases and informal conversations. If the business relies on a single-case agreement, label it clearly and describe its scope.
Prepare a concise contract summary, reviewed by the appropriate adviser, covering term, renewal, termination, assignment or control-change provisions and required notices or consents. Link the summary to the governing document so a buyer can verify the interpretation. Avoid presenting a general relationship with the payer as evidence that the contract survives every transaction structure.
For government participation, include relevant enrollment records and current status. Medicare enrollment and ownership-reporting obligations vary by provider type and transaction. CMS guidance is a starting point; the business’s Medicare contractor and advisers should confirm the applicable route. Medicaid and commercial requirements need their own review. CMS provider-enrollment guidance.
Reconcile financial reporting before explaining performance
Prepare monthly schedules showing gross charges, contractual adjustments, other adjustments, net revenue, cash receipts and relevant receivable movements. Explain the accounting policies and identify where estimates enter the process. Have the accountant determine the appropriate reconciliation rather than forcing incompatible reports into a superficial match.
Tie the schedules to the general ledger and bank activity, accounting for timing and classification differences. Cash may include payments for earlier service periods, patient receipts, refunds or recoveries of previously written-off balances. A strong cash month does not necessarily demonstrate stronger current-period economics.
Keep unusual items visible. A retrospective rate adjustment, backlog release or settlement may affect reported performance without representing a repeatable monthly result. Show where it appears in the accounts and explain the evidence supporting its treatment. Do not remove inconvenient items merely because management views them as exceptional.
When a system conversion or billing-vendor change creates a break in the data, describe the limitation and the bridging work performed. Provide a consistent mapping of old and new fields where possible. If a comparison cannot be made reliably, say so and explain what alternative evidence is available.
The buyer should be able to choose a period, follow the calculation and understand the residual difference. A reconciliation with a documented open item is more credible than a polished report that cannot be reproduced.
Show what happened to receivables, denials and appeals
Provide accounts receivable aging with a clear cutoff date and consistent aging method. Break it down by payer product and other dimensions that matter to the business, such as service or location. Explain credit balances, unapplied cash, patient responsibility and disputed amounts separately from ordinary unpaid claims.
Add collection development by service-period cohort where the data supports it. Following the same cohort over time helps distinguish recent receivables that have not matured from older balances with weak collection prospects. Keep the original population visible; removing written-off claims can make a collection percentage appear stronger without improving performance. Planning staff and leadership continuity during a sale
For denials, define the measure. Initial denial counts, final unrecovered amounts and claims awaiting information are not interchangeable. Show reason categories, affected periods, appeal status and cash recovered. Explain whether multiple submissions cause the same underlying claim to appear more than once.
Include the operational response. If authorization failures declined after a workflow change, show the period before and after, how the measure was calculated and whether enough time has passed to observe collections. Present an improvement as demonstrated only to the extent the evidence supports it.
A useful buyer discussion can then address the specific issue: slow payment, preventable denial, an unsupported balance or an unresolved contractual disagreement. Treating every unpaid claim as either fully collectible or completely lost obscures that distinction.
Test documentation through an approved review process
Financial schedules establish the population, but a buyer may need to test whether selected claims are supported. Agree the review purpose, sampling approach, period, service types and specialist qualifications. Separate targeted review of a known issue from a sample intended to support broader conclusions.
Have healthcare counsel and the privacy lead determine the lawful disclosure route before patient-level material is shared. HIPAA, Part 2 and state-law considerations can overlap. An NDA alone is insufficient. The current Part 2 framework includes consent and recipient conditions that should be checked against the actual records and proposed reviewers. HHS Part 2 guidance.
Use limited access and aggregate findings where they can answer the business question. Keep patient identifiers out of ordinary transaction presentations and issue summaries. If an independent specialist reviews records, define what the buyer receives and how underlying material is handled after the review.
Preserve the original clinical and billing records. Do not backdate entries, substitute recreated documentation or coach staff to make a sample look stronger. Questions about legitimate amendments or incomplete records belong with the relevant clinical and compliance professionals.
Record the method and its limitations alongside the findings. A small targeted sample can identify a problem without proving its size across all claims. Equally, a clean sample does not establish that every payer, service and period has been validated.
Match the evidence to the reimbursement model
Avoid treating all treatment revenue as if it is billed in the same unit. The relevant evidence may involve visits, days, episodes, bundled services, medication-related payments or another contract-specific structure. Define the unit before calculating utilization, revenue per unit or collection performance.
For Medicare-enrolled OTPs, CMS describes weekly bundled payments and specific rules for additional services and billing situations. Office-based clinicians cannot simply use OTP codes for office-based treatment. Review the current guidance for the service dates and care model at issue, with qualified billing expertise. CMS OTP billing and payment guidance.
For each material service, connect the billing rule to the evidence retained: eligibility checks, authorization where required, practitioner credentials, documentation, coding and claim submission. Payer approval of an authorization and payment of a claim answer different questions; neither should be described as a universal guarantee against later review.
If revenue depends on out-of-network arrangements or patient collections, show the actual payment history, collection practices and relevant terms. Do not substitute billed charges for expected reimbursement. If a proposed payer contract is central to a growth forecast, present it as prospective until the necessary agreement and implementation steps are complete.
Use this work to identify where specialist review is needed. A finance team can reconcile amounts while still needing clinical or reimbursement expertise to assess whether the underlying service and documentation support payment.
Address billing findings without losing track of obligations
Create an issues log for payer audits, recoupments, disputes, credit balances, refunds and potential billing errors. For each matter, state what is known, the affected period, the source documents, the current response and the person responsible. Keep an allegation, a preliminary estimate and a finalized liability distinct.
When a review suggests an overpayment, involve counsel and compliance professionals promptly. Applicable duties to investigate, report or repay need their own analysis. For Medicare Parts A and B, the current regulation addresses identification, reporting and return deadlines, including specified suspension provisions. Do not assume the sale timetable postpones those duties. Medicare overpayment regulation.
OIG’s voluntary General Compliance Program Guidance can help frame the organization’s response and controls. It is a reference for compliance infrastructure, rather than a substitute for investigating the particular facts. OIG compliance guidance.
Commercial negotiations should follow the evidence. A buyer may propose a reserve, price adjustment, escrow or indemnity depending on the issue. Have advisers check for duplicate treatment across those mechanisms and the working-capital calculation. An agreement between buyer and seller does not itself resolve an obligation owed to a payer or government agency.
Turn the evidence into an actionable closing handoff
Prepare a final reimbursement summary that identifies reconciled periods, known limitations, open payer matters and the status of transaction-related requirements. Attach the underlying evidence and give every unresolved item an accountable owner. A submitted notice, a pending application and an effective approval should have different status labels.
Agree how claims spanning closing will be handled. Identify who submits and follows up on pre-closing services, where remittances arrive, how refunds are processed and who responds to later information requests. If the seller retains receivables, define the support and access needed to collect them lawfully.
Test the practical workflow with the billing team: an unpaid old claim, an authorization renewal and a post-closing claim rejection. Confirm that responsibility, authorized system access and escalation routes are clear. Include a contingency for payment delays without assuming the parties can bill under an arrangement that has not been approved.
Assign the billing handoff to people with the capacity and authority to complete it. Planning staff and leadership continuity during a sale addresses the coverage and employment questions that can otherwise leave a well-documented reimbursement process without an accountable team.
For owners organizing this work, Olympic M&A’s behavioral health advisory team is a starting point for discussing transaction priorities and buyer requests. Bring the reconciliations and unresolved questions so healthcare counsel, accounting and reimbursement specialists can focus on the issues that may affect earnings or continuity.
Frequently asked questions
What is the most useful first report for SUD reimbursement due diligence?
Start with a reconciled monthly view of revenue, cash and receivables, supported by a payer-product inventory and clear definitions. A single report rarely answers every question. The value comes from connecting the financial summary to contracts, claims and collections without unexplained changes in scope or dates.
Does a paid claim prove that reimbursement is secure?
Payment is evidence of collection, but it does not establish that a claim can never be reviewed, adjusted or recouped. Buyers may test coverage, documentation, coding and applicable payer requirements. Present payment history alongside known audits, disputes and other facts that could affect retained cash.
How should an owner explain a recent improvement in collections?
Show the original claim population, service periods, receipt dates and the workflow change behind the result. Separate backlog collections and unusual settlements from current operating performance. Identify any remaining uncertainty, including whether recent claims have had enough time to demonstrate a sustained improvement.
Can a purchase-price adjustment settle an overpayment issue?
It can allocate an agreed economic consequence between buyer and seller, but it does not by itself satisfy duties to the payer or government. Counsel should determine investigation, reporting and repayment obligations separately, while the transaction documents address responsibility, access to records and potential recovery.
