6.1 Initiating & Conducting Compliance Investigations, Evidence Preservation & Interviewing

6.1 Initiating & Conducting Compliance Investigations, Evidence Preservation & Interviewing

A central pillar of an effective healthcare compliance program—as defined by the HHS Office of Inspector General (OIG)—is the establishment of robust mechanisms to respond promptly to detected offenses, conduct thorough internal investigations, and implement corrective action. When a healthcare organization receives a hotline report, internal audit flag, or government subpoena, the Compliance Officer must act decisively to investigate allegations while preserving evidence and maintaining legal protections.

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Triggers, Triage, and Scoping of Compliance Investigations

Compliance investigations originate from a wide variety of internal and external sources. Properly categorizing and triaging intake reports ensures that high-risk allegations receive immediate attention while routine operational inquiries are routed appropriately.

Common Investigation Triggers

Investigation Triage & Preliminary Inquiry

Upon receiving a report, the Compliance Officer must perform a preliminary inquiry within 24 to 48 hours to evaluate credibility, scope, and potential exposure. Triage decisions hinge on three core questions:

1. Does the allegation involve an immediate threat to patient health or safety? If yes, clinical operations must be suspended or modified immediately.
2. Does the issue implicate potential criminal conduct or systemic False Claims Act (FCA) liability? If yes, legal counsel must be engaged immediately to direct the investigation under attorney-client privilege.
3. Is the matter an administrative or operational disagreement? Minor coding disputes without evidence of intent may be handled as routine internal reviews.

Scoping the Investigation Plan

Before interviewing witnesses or pulling records, the lead investigator must draft a written Investigation Plan. The plan establishes the core hypothesis, defines the temporal scope (e.g., baseline 2-year lookback), identifies potential document custodians, and outlines required technical resources (such as IT forensic specialists or certified professional coders).

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Attorney-Client Privilege & Upjohn Warnings

Maintaining Attorney-Client Privilege and the Work-Product Doctrine is vital when an investigation uncovers potential legal violations. Privilege protects confidential communications between legal counsel and corporate employees made for the purpose of obtaining or providing legal advice.

Involving Legal Counsel

When an investigation involves high-stakes allegations—such as Anti-Kickback Statute (AKS) violations, physician self-referral (Stark Law) non-compliance, or executive misconduct—the Compliance Officer should consult with inside or outside legal counsel. Counsel should formally retain any independent experts (e.g., forensic accountants or billing auditors) via a Kovel agreement to extend privilege to expert work product.

Upjohn Warnings (Corporate Miranda Warnings)

Originating from the Supreme Court decision in Upjohn Co. v. United States (449 U.S. 383), an Upjohn warning must be administered by legal counsel or compliance investigators acting at counsel's direction before interviewing any corporate employee.

+-----------------------------------------------------------------------------------+
|                             MANDATORY UPJOHN ELEMENTS                             |
+-----------------------------------------------------------------------------------+
| 1. Clear Statement of Representation: Counsel represents the COMPANY, not the     |
|    individual employee.                                                           |
| 2. Privilege Ownership: The interview is protected by attorney-client privilege,   |
|    which belongs EXCLUSIVELY to the company.                                      |
| 3. Waiver Authority: The company alone retains the right to waive privilege and    |
|    disclose interview contents to third parties, including the DOJ or OIG.        |
| 4. Confidentiality Mandate: The employee must keep the interview contents         |
|    strictly confidential to preserve the company's privilege.                    |
+-----------------------------------------------------------------------------------+

Critical Compliance Rule: Failure to administer a clear Upjohn warning can lead to catastrophic legal consequences. If an employee reasonably believes counsel represented them personally, the employee may assert personal privilege, preventing the organization from disclosing crucial investigation findings to federal prosecutors to secure a favorable corporate settlement.

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Evidence Gathering, Document Holds & eDiscovery

Preserving physical and electronic evidence is a legal requirement that begins the moment litigation or a government investigation is reasonably anticipated.

Litigation Holds (Document Preservation Notices)

Upon triggering events, the compliance and legal team must immediately issue a written Litigation Hold (Document Retention Notice) to all relevant custodians. The notice instructs employees to preserve all documents, paper files, emails, text messages, and electronic records related to the subject matter.

• Suspending Routine Destruction: IT automated deletion schedules, backup tape overwrites, and document retention purge cycles must be immediately halted for target custodians.
• Spoliation of Evidence: The intentional or negligent destruction of evidence is termed spoliation. Under Rule 37(e) of the Federal Rules of Civil Procedure (FRCP), courts can impose severe sanctions for spoliation, including adverse inference jury instructions, dismissal of defenses, or massive monetary penalties.

Electronic Discovery (eDiscovery) & Chain of Custody

Collecting Electronically Stored Information (ESI)—including Electronic Health Record (EHR) audit trails, billing system logs, and corporate emails—requires forensic integrity. Forensic collection tools must capture metadata (creation dates, author, modification logs) without altering the original file.

Every piece of physical or digital evidence collected must be recorded on a formal Chain of Custody Log, detailing:

1. Description of item/file hash (MD5/SHA-256)
2. Date, time, and location of collection
3. Name of collecting investigator
4. Secure storage location and access records

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Witness Interviewing Techniques & Documentation Standards

Interviews are often the primary source of context surrounding compliance breakdowns. Conducting interviews professionally requires structured planning, objective questioning, and rigorous documentation.

Interview Sequencing & Preparation

Investigators should organize witness interviews strategically. In most financial or billing investigations, a bottom-up approach is preferred: interviewing lower-level operational staff first to gather factual documents and baseline processes before interviewing managers or executive subjects.

Questioning Methodologies

• Baseline & Funnel Technique: Start with broad, open-ended questions ("Walk me through your daily claim submission process") to establish a baseline before narrowing down to specific, direct questions ("Why was Modifier 25 appended to this visit?").
• Avoiding Pitfalls: Investigators must refrain from asking leading questions, expressing personal opinions, making promises of immunity, or making false threats. Coercive tactics can support employee claims of false imprisonment or intentional infliction of emotional distress.
• Unionized Environments (Weingarten Rights): Under the National Labor Relations Act (NLRA), union-represented employees have the right to have a union representative present during an investigatory interview if the employee reasonably believes the interview may result in disciplinary action.

Documenting the Interview

Investigators should prepare a formal Interview Memorandum immediately following the interview (within 24 to 48 hours):

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|                         INTERVIEW MEMORANDUM STRUCTURE                            |
+-----------------------------------------------------------------------------------+
| • Header: Date, time, location, attendees, and explicit Upjohn notation.           |
| • Factual Summary: Objective narrative of employee statements without verbatim     |
|   transcript quotes (unless critical).                                             |
| • Investigator Impressions: Analytical thoughts regarding witness credibility and   |
|   relevance, clearly labeled to protect attorney work-product.                    |
+-----------------------------------------------------------------------------------+

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Real-World Healthcare Compliance Scenario

Case Study: The Emergency Department Upcoding Investigation

Context: A large regional hospital receives an anonymous compliance hotline call alleging that the ED Practice Manager instructs coders to automatically convert all Level 3 Emergency Department evaluation and management (E/M) visits (CPT 99283) to Level 5 visits (CPT 99285) whenever a patient receives intravenous (IV) fluids.

Action Plan Executed by Compliance Officer & Legal Counsel:

1. Triage & Legal Engagement: The Compliance Officer conducts a preliminary 24-hour inquiry confirming a 40% spike in Level 5 ED billing over 12 months. Inside counsel is engaged to direct a formal legal investigation.
2. Litigation Hold: Counsel issues an immediate litigation hold to ED administrative staff, coders, and the IT department, freezing email deletion and EHR template modification logs.
3. Forensic Audit: An independent coding consultant pulls a statistically valid sample of 100 Level 5 ED records. Audit reveals a 65% error rate: IV push administration was systematically used to override physician clinical complexity documentation.
4. Witness Interviews & Upjohn: Counsel interviews three ED coders after administering verbal and written Upjohn warnings. The coders confirm the Practice Manager gave verbal instructions to inflate coding to meet monthly revenue targets.
5. Documentation & Findings: Counsel drafts privileged interview memoranda combining factual statements and work-product analysis, laying the groundwork for root cause analysis and repayment calculations.